Home / 81,392,155.40-122,088,233.10-55,564,122.80

Finding the Fourth Proportional to 81,392,155.40, 122,088,233.10 and 55,564,122.80

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Solution

The fourth proportional to 81,392,155.40, 122,088,233.10 and 55,564,122.80 is: 83,346,184.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,392,155.40 : 122,088,233.10 = 55,564,122.80 : x
  2. Step 2: Convert to fraction form
    81,392,155.40/122,088,233.10 = 55,564,122.80/x
  3. Step 3: Cross multiply
    81,392,155.40x = 122,088,233.10 × 55,564,122.80
  4. Step 4: Simplify right side
    81,392,155.40x = 6,783,725,576,403,424
  5. Step 5: Solve for x
    x = 6,783,725,576,403,424/81,392,155.40
  6. Step 6: Final answer
    x = 83,346,184.20

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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.