Home / 87,387.71-120,591.72-53,384.31

Finding the Fourth Proportional to 87,387.71, 120,591.72 and 53,384.31

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Solution

The fourth proportional to 87,387.71, 120,591.72 and 53,384.31 is: 73,668.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,387.71 : 120,591.72 = 53,384.31 : x
  2. Step 2: Convert to fraction form
    87,387.71/120,591.72 = 53,384.31/x
  3. Step 3: Cross multiply
    87,387.71x = 120,591.72 × 53,384.31
  4. Step 4: Simplify right side
    87,387.71x = 6,437,705,763.91
  5. Step 5: Solve for x
    x = 6,437,705,763.91/87,387.71
  6. Step 6: Final answer
    x = 73,668.32

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.