Home / 71,542.28-98,732.82-39,711.71

Finding the Fourth Proportional to 71,542.28, 98,732.82 and 39,711.71

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Solution

The fourth proportional to 71,542.28, 98,732.82 and 39,711.71 is: 54,804.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,542.28 : 98,732.82 = 39,711.71 : x
  2. Step 2: Convert to fraction form
    71,542.28/98,732.82 = 39,711.71/x
  3. Step 3: Cross multiply
    71,542.28x = 98,732.82 × 39,711.71
  4. Step 4: Simplify right side
    71,542.28x = 3,920,848,621.66
  5. Step 5: Solve for x
    x = 3,920,848,621.66/71,542.28
  6. Step 6: Final answer
    x = 54,804.64

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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.