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Finding the Fourth Proportional to 87,002.64, 120,063.87 and 49,276.89

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Solution

The fourth proportional to 87,002.64, 120,063.87 and 49,276.89 is: 68,002.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,002.64 : 120,063.87 = 49,276.89 : x
  2. Step 2: Convert to fraction form
    87,002.64/120,063.87 = 49,276.89/x
  3. Step 3: Cross multiply
    87,002.64x = 120,063.87 × 49,276.89
  4. Step 4: Simplify right side
    87,002.64x = 5,916,374,114.96
  5. Step 5: Solve for x
    x = 5,916,374,114.96/87,002.64
  6. Step 6: Final answer
    x = 68,002.24

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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.