Home / 87,397.39-131,139.84-40,012.39

Finding the Fourth Proportional to 87,397.39, 131,139.84 and 40,012.39

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Solution

The fourth proportional to 87,397.39, 131,139.84 and 40,012.39 is: 60,038.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,397.39 : 131,139.84 = 40,012.39 : x
  2. Step 2: Convert to fraction form
    87,397.39/131,139.84 = 40,012.39/x
  3. Step 3: Cross multiply
    87,397.39x = 131,139.84 × 40,012.39
  4. Step 4: Simplify right side
    87,397.39x = 5,247,218,422.62
  5. Step 5: Solve for x
    x = 5,247,218,422.62/87,397.39
  6. Step 6: Final answer
    x = 60,038.62

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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.