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Finding the Fourth Proportional to 65,139.20, 97,854.60 and 62,660.60

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Solution

The fourth proportional to 65,139.20, 97,854.60 and 62,660.60 is: 94,131.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,139.20 : 97,854.60 = 62,660.60 : x
  2. Step 2: Convert to fraction form
    65,139.20/97,854.60 = 62,660.60/x
  3. Step 3: Cross multiply
    65,139.20x = 97,854.60 × 62,660.60
  4. Step 4: Simplify right side
    65,139.20x = 6,131,627,948.76
  5. Step 5: Solve for x
    x = 6,131,627,948.76/65,139.20
  6. Step 6: Final answer
    x = 94,131.15

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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.