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Finding the Fourth Proportional to 67,061.60, 100,438.80 and 34,191.20

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Solution

The fourth proportional to 67,061.60, 100,438.80 and 34,191.20 is: 51,208.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,061.60 : 100,438.80 = 34,191.20 : x
  2. Step 2: Convert to fraction form
    67,061.60/100,438.80 = 34,191.20/x
  3. Step 3: Cross multiply
    67,061.60x = 100,438.80 × 34,191.20
  4. Step 4: Simplify right side
    67,061.60x = 3,434,123,098.56
  5. Step 5: Solve for x
    x = 3,434,123,098.56/67,061.60
  6. Step 6: Final answer
    x = 51,208.49

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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.