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Finding the Fourth Proportional to 65,770.71, 98,680.92 and 39,493.77

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Solution

The fourth proportional to 65,770.71, 98,680.92 and 39,493.77 is: 59,255.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,770.71 : 98,680.92 = 39,493.77 : x
  2. Step 2: Convert to fraction form
    65,770.71/98,680.92 = 39,493.77/x
  3. Step 3: Cross multiply
    65,770.71x = 98,680.92 × 39,493.77
  4. Step 4: Simplify right side
    65,770.71x = 3,897,281,557.87
  5. Step 5: Solve for x
    x = 3,897,281,557.87/65,770.71
  6. Step 6: Final answer
    x = 59,255.58

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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.