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Finding the Fourth Proportional to 87,474.88, 120,715.72 and 49,748.32

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Solution

The fourth proportional to 87,474.88, 120,715.72 and 49,748.32 is: 68,652.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,474.88 : 120,715.72 = 49,748.32 : x
  2. Step 2: Convert to fraction form
    87,474.88/120,715.72 = 49,748.32/x
  3. Step 3: Cross multiply
    87,474.88x = 120,715.72 × 49,748.32
  4. Step 4: Simplify right side
    87,474.88x = 6,005,404,267.59
  5. Step 5: Solve for x
    x = 6,005,404,267.59/87,474.88
  6. Step 6: Final answer
    x = 68,652.90

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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.