Home / 81,262,602,012.70-121,893,903,019.05-53,019,648,364.60

Finding the Fourth Proportional to 81,262,602,012.70, 121,893,903,019.05 and 53,019,648,364.60

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Solution

The fourth proportional to 81,262,602,012.70, 121,893,903,019.05 and 53,019,648,364.60 is: 79,529,472,546.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,262,602,012.70 : 121,893,903,019.05 = 53,019,648,364.60 : x
  2. Step 2: Convert to fraction form
    81,262,602,012.70/121,893,903,019.05 = 53,019,648,364.60/x
  3. Step 3: Cross multiply
    81,262,602,012.70x = 121,893,903,019.05 × 53,019,648,364.60
  4. Step 4: Simplify right side
    81,262,602,012.70x = 6,462,771,875,858,685,624,320
  5. Step 5: Solve for x
    x = 6,462,771,875,858,685,624,320/81,262,602,012.70
  6. Step 6: Final answer
    x = 79,529,472,546.90

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.