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Finding the Fourth Proportional to 57,608.12, 79,513.12 and 38,488.88

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Solution

The fourth proportional to 57,608.12, 79,513.12 and 38,488.88 is: 53,123.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,608.12 : 79,513.12 = 38,488.88 : x
  2. Step 2: Convert to fraction form
    57,608.12/79,513.12 = 38,488.88/x
  3. Step 3: Cross multiply
    57,608.12x = 79,513.12 × 38,488.88
  4. Step 4: Simplify right side
    57,608.12x = 3,060,370,934.11
  5. Step 5: Solve for x
    x = 3,060,370,934.11/57,608.12
  6. Step 6: Final answer
    x = 53,123.95

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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.