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Finding the Fourth Proportional to 87,357.80, 131,036.70 and 37,429.40

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Solution

The fourth proportional to 87,357.80, 131,036.70 and 37,429.40 is: 56,144.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,357.80 : 131,036.70 = 37,429.40 : x
  2. Step 2: Convert to fraction form
    87,357.80/131,036.70 = 37,429.40/x
  3. Step 3: Cross multiply
    87,357.80x = 131,036.70 × 37,429.40
  4. Step 4: Simplify right side
    87,357.80x = 4,904,625,058.98
  5. Step 5: Solve for x
    x = 4,904,625,058.98/87,357.80
  6. Step 6: Final answer
    x = 56,144.10

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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.