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Finding the Fourth Proportional to 87,349.50, 131,024.25 and 21,685.50

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Solution

The fourth proportional to 87,349.50, 131,024.25 and 21,685.50 is: 32,528.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,349.50 : 131,024.25 = 21,685.50 : x
  2. Step 2: Convert to fraction form
    87,349.50/131,024.25 = 21,685.50/x
  3. Step 3: Cross multiply
    87,349.50x = 131,024.25 × 21,685.50
  4. Step 4: Simplify right side
    87,349.50x = 2,841,326,373.38
  5. Step 5: Solve for x
    x = 2,841,326,373.38/87,349.50
  6. Step 6: Final answer
    x = 32,528.25

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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.