Home / 87,690.59-131,503.38-31,515.56

Finding the Fourth Proportional to 87,690.59, 131,503.38 and 31,515.56

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Solution

The fourth proportional to 87,690.59, 131,503.38 and 31,515.56 is: 47,261.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,690.59 : 131,503.38 = 31,515.56 : x
  2. Step 2: Convert to fraction form
    87,690.59/131,503.38 = 31,515.56/x
  3. Step 3: Cross multiply
    87,690.59x = 131,503.38 × 31,515.56
  4. Step 4: Simplify right side
    87,690.59x = 4,144,402,005.08
  5. Step 5: Solve for x
    x = 4,144,402,005.08/87,690.59
  6. Step 6: Final answer
    x = 47,261.65

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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.