Home / 71,508.12-98,685.84-39,680.52

Finding the Fourth Proportional to 71,508.12, 98,685.84 and 39,680.52

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Solution

The fourth proportional to 71,508.12, 98,685.84 and 39,680.52 is: 54,761.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,508.12 : 98,685.84 = 39,680.52 : x
  2. Step 2: Convert to fraction form
    71,508.12/98,685.84 = 39,680.52/x
  3. Step 3: Cross multiply
    71,508.12x = 98,685.84 × 39,680.52
  4. Step 4: Simplify right side
    71,508.12x = 3,915,905,447.84
  5. Step 5: Solve for x
    x = 3,915,905,447.84/71,508.12
  6. Step 6: Final answer
    x = 54,761.69

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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.