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Finding the Fourth Proportional to 67,240.42, 100,766.23 and 53,138.45

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Solution

The fourth proportional to 67,240.42, 100,766.23 and 53,138.45 is: 79,633.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,240.42 : 100,766.23 = 53,138.45 : x
  2. Step 2: Convert to fraction form
    67,240.42/100,766.23 = 53,138.45/x
  3. Step 3: Cross multiply
    67,240.42x = 100,766.23 × 53,138.45
  4. Step 4: Simplify right side
    67,240.42x = 5,354,561,393.61
  5. Step 5: Solve for x
    x = 5,354,561,393.61/67,240.42
  6. Step 6: Final answer
    x = 79,633.08

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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.