Home / 71,115.78-98,139.96-39,283.86

Finding the Fourth Proportional to 71,115.78, 98,139.96 and 39,283.86

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Solution

The fourth proportional to 71,115.78, 98,139.96 and 39,283.86 is: 54,211.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,115.78 : 98,139.96 = 39,283.86 : x
  2. Step 2: Convert to fraction form
    71,115.78/98,139.96 = 39,283.86/x
  3. Step 3: Cross multiply
    71,115.78x = 98,139.96 × 39,283.86
  4. Step 4: Simplify right side
    71,115.78x = 3,855,316,449.05
  5. Step 5: Solve for x
    x = 3,855,316,449.05/71,115.78
  6. Step 6: Final answer
    x = 54,211.83

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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.