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Finding the Fourth Proportional to 67,862.39, 101,777.18 and 28,449

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Solution

The fourth proportional to 67,862.39, 101,777.18 and 28,449 is: 42,666.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,862.39 : 101,777.18 = 28,449 : x
  2. Step 2: Convert to fraction form
    67,862.39/101,777.18 = 28,449/x
  3. Step 3: Cross multiply
    67,862.39x = 101,777.18 × 28,449
  4. Step 4: Simplify right side
    67,862.39x = 2,895,458,851.58
  5. Step 5: Solve for x
    x = 2,895,458,851.58/67,862.39
  6. Step 6: Final answer
    x = 42,666.62

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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.