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Finding the Fourth Proportional to 34,572.60, 47,710.80 and 20,425.44

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Solution

The fourth proportional to 34,572.60, 47,710.80 and 20,425.44 is: 28,187.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,572.60 : 47,710.80 = 20,425.44 : x
  2. Step 2: Convert to fraction form
    34,572.60/47,710.80 = 20,425.44/x
  3. Step 3: Cross multiply
    34,572.60x = 47,710.80 × 20,425.44
  4. Step 4: Simplify right side
    34,572.60x = 974,514,082.75
  5. Step 5: Solve for x
    x = 974,514,082.75/34,572.60
  6. Step 6: Final answer
    x = 28,187.47

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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.