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Finding the Fourth Proportional to 87,283.88, 120,451.74 and 47,539.88

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Solution

The fourth proportional to 87,283.88, 120,451.74 and 47,539.88 is: 65,605.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,283.88 : 120,451.74 = 47,539.88 : x
  2. Step 2: Convert to fraction form
    87,283.88/120,451.74 = 47,539.88/x
  3. Step 3: Cross multiply
    87,283.88x = 120,451.74 × 47,539.88
  4. Step 4: Simplify right side
    87,283.88x = 5,726,261,265.39
  5. Step 5: Solve for x
    x = 5,726,261,265.39/87,283.88
  6. Step 6: Final answer
    x = 65,605.03

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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.