Home / 78,733,686.72-118,106,696.88-21,225,077.76

Finding the Fourth Proportional to 78,733,686.72, 118,106,696.88 and 21,225,077.76

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Solution

The fourth proportional to 78,733,686.72, 118,106,696.88 and 21,225,077.76 is: 31,839,279.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,733,686.72 : 118,106,696.88 = 21,225,077.76 : x
  2. Step 2: Convert to fraction form
    78,733,686.72/118,106,696.88 = 21,225,077.76/x
  3. Step 3: Cross multiply
    78,733,686.72x = 118,106,696.88 × 21,225,077.76
  4. Step 4: Simplify right side
    78,733,686.72x = 2,506,823,825,254,749.50
  5. Step 5: Solve for x
    x = 2,506,823,825,254,749.50/78,733,686.72
  6. Step 6: Final answer
    x = 31,839,279.09

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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.