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Finding the Fourth Proportional to 67,369.68, 101,077.20 and 42,380.64

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Solution

The fourth proportional to 67,369.68, 101,077.20 and 42,380.64 is: 63,585.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,369.68 : 101,077.20 = 42,380.64 : x
  2. Step 2: Convert to fraction form
    67,369.68/101,077.20 = 42,380.64/x
  3. Step 3: Cross multiply
    67,369.68x = 101,077.20 × 42,380.64
  4. Step 4: Simplify right side
    67,369.68x = 4,283,716,425.41
  5. Step 5: Solve for x
    x = 4,283,716,425.41/67,369.68
  6. Step 6: Final answer
    x = 63,585.23

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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.