Home / 87,279.46-130,919.29-28,123.94

Finding the Fourth Proportional to 87,279.46, 130,919.29 and 28,123.94

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Solution

The fourth proportional to 87,279.46, 130,919.29 and 28,123.94 is: 42,185.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,279.46 : 130,919.29 = 28,123.94 : x
  2. Step 2: Convert to fraction form
    87,279.46/130,919.29 = 28,123.94/x
  3. Step 3: Cross multiply
    87,279.46x = 130,919.29 × 28,123.94
  4. Step 4: Simplify right side
    87,279.46x = 3,681,966,513.79
  5. Step 5: Solve for x
    x = 3,681,966,513.79/87,279.46
  6. Step 6: Final answer
    x = 42,185.95

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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.