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Finding the Fourth Proportional to 87,659.62, 120,970.31 and 47,373.37

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Solution

The fourth proportional to 87,659.62, 120,970.31 and 47,373.37 is: 65,375.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,659.62 : 120,970.31 = 47,373.37 : x
  2. Step 2: Convert to fraction form
    87,659.62/120,970.31 = 47,373.37/x
  3. Step 3: Cross multiply
    87,659.62x = 120,970.31 × 47,373.37
  4. Step 4: Simplify right side
    87,659.62x = 5,730,771,254.64
  5. Step 5: Solve for x
    x = 5,730,771,254.64/87,659.62
  6. Step 6: Final answer
    x = 65,375.27

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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.