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Finding the Fourth Proportional to 71,067.38, 98,070.40 and 38,801.40

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Solution

The fourth proportional to 71,067.38, 98,070.40 and 38,801.40 is: 53,544.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,067.38 : 98,070.40 = 38,801.40 : x
  2. Step 2: Convert to fraction form
    71,067.38/98,070.40 = 38,801.40/x
  3. Step 3: Cross multiply
    71,067.38x = 98,070.40 × 38,801.40
  4. Step 4: Simplify right side
    71,067.38x = 3,805,268,818.56
  5. Step 5: Solve for x
    x = 3,805,268,818.56/71,067.38
  6. Step 6: Final answer
    x = 53,544.52

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1.5x scale

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.