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Finding the Fourth Proportional to 87,658.62, 120,968.93 and 47,372.37

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Solution

The fourth proportional to 87,658.62, 120,968.93 and 47,372.37 is: 65,373.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,658.62 : 120,968.93 = 47,372.37 : x
  2. Step 2: Convert to fraction form
    87,658.62/120,968.93 = 47,372.37/x
  3. Step 3: Cross multiply
    87,658.62x = 120,968.93 × 47,372.37
  4. Step 4: Simplify right side
    87,658.62x = 5,730,584,910.46
  5. Step 5: Solve for x
    x = 5,730,584,910.46/87,658.62
  6. Step 6: Final answer
    x = 65,373.89

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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.