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Finding the Fourth Proportional to 87,523.40, 131,066.40 and 57,780.20

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Solution

The fourth proportional to 87,523.40, 131,066.40 and 57,780.20 is: 86,525.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,523.40 : 131,066.40 = 57,780.20 : x
  2. Step 2: Convert to fraction form
    87,523.40/131,066.40 = 57,780.20/x
  3. Step 3: Cross multiply
    87,523.40x = 131,066.40 × 57,780.20
  4. Step 4: Simplify right side
    87,523.40x = 7,573,042,805.28
  5. Step 5: Solve for x
    x = 7,573,042,805.28/87,523.40
  6. Step 6: Final answer
    x = 86,525.92

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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.