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Finding the Fourth Proportional to 71,062.76, 98,065.97 and 39,230.97

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Solution

The fourth proportional to 71,062.76, 98,065.97 and 39,230.97 is: 54,138.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,062.76 : 98,065.97 = 39,230.97 : x
  2. Step 2: Convert to fraction form
    71,062.76/98,065.97 = 39,230.97/x
  3. Step 3: Cross multiply
    71,062.76x = 98,065.97 × 39,230.97
  4. Step 4: Simplify right side
    71,062.76x = 3,847,222,930.94
  5. Step 5: Solve for x
    x = 3,847,222,930.94/71,062.76
  6. Step 6: Final answer
    x = 54,138.39

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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.