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Finding the Fourth Proportional to 67,149.20, 100,801.40 and 36,045.20

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Solution

The fourth proportional to 67,149.20, 100,801.40 and 36,045.20 is: 54,109.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,149.20 : 100,801.40 = 36,045.20 : x
  2. Step 2: Convert to fraction form
    67,149.20/100,801.40 = 36,045.20/x
  3. Step 3: Cross multiply
    67,149.20x = 100,801.40 × 36,045.20
  4. Step 4: Simplify right side
    67,149.20x = 3,633,406,623.28
  5. Step 5: Solve for x
    x = 3,633,406,623.28/67,149.20
  6. Step 6: Final answer
    x = 54,109.46

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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.