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Finding the Fourth Proportional to 85,654.59, 128,490.44 and 29,487.27

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Solution

The fourth proportional to 85,654.59, 128,490.44 and 29,487.27 is: 44,233.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,654.59 : 128,490.44 = 29,487.27 : x
  2. Step 2: Convert to fraction form
    85,654.59/128,490.44 = 29,487.27/x
  3. Step 3: Cross multiply
    85,654.59x = 128,490.44 × 29,487.27
  4. Step 4: Simplify right side
    85,654.59x = 3,788,832,149.26
  5. Step 5: Solve for x
    x = 3,788,832,149.26/85,654.59
  6. Step 6: Final answer
    x = 44,233.85

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1.5x scale

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.