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Finding the Fourth Proportional to 87,348.80, 120,541.44 and 51,538.88

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Solution

The fourth proportional to 87,348.80, 120,541.44 and 51,538.88 is: 71,123.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,348.80 : 120,541.44 = 51,538.88 : x
  2. Step 2: Convert to fraction form
    87,348.80/120,541.44 = 51,538.88/x
  3. Step 3: Cross multiply
    87,348.80x = 120,541.44 × 51,538.88
  4. Step 4: Simplify right side
    87,348.80x = 6,212,570,811.19
  5. Step 5: Solve for x
    x = 6,212,570,811.19/87,348.80
  6. Step 6: Final answer
    x = 71,123.71

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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.