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Finding the Fourth Proportional to 34,753.40, 52,129.68 and 8,458.20

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Solution

The fourth proportional to 34,753.40, 52,129.68 and 8,458.20 is: 12,687.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,753.40 : 52,129.68 = 8,458.20 : x
  2. Step 2: Convert to fraction form
    34,753.40/52,129.68 = 8,458.20/x
  3. Step 3: Cross multiply
    34,753.40x = 52,129.68 × 8,458.20
  4. Step 4: Simplify right side
    34,753.40x = 440,923,259.38
  5. Step 5: Solve for x
    x = 440,923,259.38/34,753.40
  6. Step 6: Final answer
    x = 12,687.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.