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Finding the Fourth Proportional to 87,363.32, 120,401.51 and 63,448.47

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Solution

The fourth proportional to 87,363.32, 120,401.51 and 63,448.47 is: 87,442.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,363.32 : 120,401.51 = 63,448.47 : x
  2. Step 2: Convert to fraction form
    87,363.32/120,401.51 = 63,448.47/x
  3. Step 3: Cross multiply
    87,363.32x = 120,401.51 × 63,448.47
  4. Step 4: Simplify right side
    87,363.32x = 7,639,291,277.95
  5. Step 5: Solve for x
    x = 7,639,291,277.95/87,363.32
  6. Step 6: Final answer
    x = 87,442.78

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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.