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Finding the Fourth Proportional to 67,402.10, 101,139.60 and 27,963.20

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Solution

The fourth proportional to 67,402.10, 101,139.60 and 27,963.20 is: 41,959.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,402.10 : 101,139.60 = 27,963.20 : x
  2. Step 2: Convert to fraction form
    67,402.10/101,139.60 = 27,963.20/x
  3. Step 3: Cross multiply
    67,402.10x = 101,139.60 × 27,963.20
  4. Step 4: Simplify right side
    67,402.10x = 2,828,186,862.72
  5. Step 5: Solve for x
    x = 2,828,186,862.72/67,402.10
  6. Step 6: Final answer
    x = 41,959.92

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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.