Home / 71,320.32-98,425.40-39,489.75

Finding the Fourth Proportional to 71,320.32, 98,425.40 and 39,489.75

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Solution

The fourth proportional to 71,320.32, 98,425.40 and 39,489.75 is: 54,497.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,320.32 : 98,425.40 = 39,489.75 : x
  2. Step 2: Convert to fraction form
    71,320.32/98,425.40 = 39,489.75/x
  3. Step 3: Cross multiply
    71,320.32x = 98,425.40 × 39,489.75
  4. Step 4: Simplify right side
    71,320.32x = 3,886,794,242.20
  5. Step 5: Solve for x
    x = 3,886,794,242.20/71,320.32
  6. Step 6: Final answer
    x = 54,497.71

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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.