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Finding the Fourth Proportional to 87,687.75, 131,457.80 and 35,068.53

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Solution

The fourth proportional to 87,687.75, 131,457.80 and 35,068.53 is: 52,573.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,687.75 : 131,457.80 = 35,068.53 : x
  2. Step 2: Convert to fraction form
    87,687.75/131,457.80 = 35,068.53/x
  3. Step 3: Cross multiply
    87,687.75x = 131,457.80 × 35,068.53
  4. Step 4: Simplify right side
    87,687.75x = 4,610,031,627.69
  5. Step 5: Solve for x
    x = 4,610,031,627.69/87,687.75
  6. Step 6: Final answer
    x = 52,573.27

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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.