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Finding the Fourth Proportional to 87,364.32, 120,402.88 and 63,449.47

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Solution

The fourth proportional to 87,364.32, 120,402.88 and 63,449.47 is: 87,444.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,364.32 : 120,402.88 = 63,449.47 : x
  2. Step 2: Convert to fraction form
    87,364.32/120,402.88 = 63,449.47/x
  3. Step 3: Cross multiply
    87,364.32x = 120,402.88 × 63,449.47
  4. Step 4: Simplify right side
    87,364.32x = 7,639,498,922.47
  5. Step 5: Solve for x
    x = 7,639,498,922.47/87,364.32
  6. Step 6: Final answer
    x = 87,444.15

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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.