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Finding the Fourth Proportional to 87,558, 120,825.92 and 49,317.88

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Solution

The fourth proportional to 87,558, 120,825.92 and 49,317.88 is: 68,056.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,558 : 120,825.92 = 49,317.88 : x
  2. Step 2: Convert to fraction form
    87,558/120,825.92 = 49,317.88/x
  3. Step 3: Cross multiply
    87,558x = 120,825.92 × 49,317.88
  4. Step 4: Simplify right side
    87,558x = 5,958,878,223.45
  5. Step 5: Solve for x
    x = 5,958,878,223.45/87,558
  6. Step 6: Final answer
    x = 68,056.35

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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.