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Finding the Fourth Proportional to 87,272.88, 120,436.57 and 47,528.88

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Solution

The fourth proportional to 87,272.88, 120,436.57 and 47,528.88 is: 65,589.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,272.88 : 120,436.57 = 47,528.88 : x
  2. Step 2: Convert to fraction form
    87,272.88/120,436.57 = 47,528.88/x
  3. Step 3: Cross multiply
    87,272.88x = 120,436.57 × 47,528.88
  4. Step 4: Simplify right side
    87,272.88x = 5,724,215,283.14
  5. Step 5: Solve for x
    x = 5,724,215,283.14/87,272.88
  6. Step 6: Final answer
    x = 65,589.85

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1.5x scale

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.