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Finding the Fourth Proportional to 71,484.80, 98,654.88 and 39,656.96

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Solution

The fourth proportional to 71,484.80, 98,654.88 and 39,656.96 is: 54,729.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,484.80 : 98,654.88 = 39,656.96 : x
  2. Step 2: Convert to fraction form
    71,484.80/98,654.88 = 39,656.96/x
  3. Step 3: Cross multiply
    71,484.80x = 98,654.88 × 39,656.96
  4. Step 4: Simplify right side
    71,484.80x = 3,912,352,629.96
  5. Step 5: Solve for x
    x = 3,912,352,629.96/71,484.80
  6. Step 6: Final answer
    x = 54,729.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.