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Finding the Fourth Proportional to 71,065.38, 98,067.65 and 38,799.40

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Solution

The fourth proportional to 71,065.38, 98,067.65 and 38,799.40 is: 53,541.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,065.38 : 98,067.65 = 38,799.40 : x
  2. Step 2: Convert to fraction form
    71,065.38/98,067.65 = 38,799.40/x
  3. Step 3: Cross multiply
    71,065.38x = 98,067.65 × 38,799.40
  4. Step 4: Simplify right side
    71,065.38x = 3,804,965,785.41
  5. Step 5: Solve for x
    x = 3,804,965,785.41/71,065.38
  6. Step 6: Final answer
    x = 53,541.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.