Home / 82,355.03-123,511.88-31,743.90

Finding the Fourth Proportional to 82,355.03, 123,511.88 and 31,743.90

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Solution

The fourth proportional to 82,355.03, 123,511.88 and 31,743.90 is: 47,607.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,355.03 : 123,511.88 = 31,743.90 : x
  2. Step 2: Convert to fraction form
    82,355.03/123,511.88 = 31,743.90/x
  3. Step 3: Cross multiply
    82,355.03x = 123,511.88 × 31,743.90
  4. Step 4: Simplify right side
    82,355.03x = 3,920,748,149.97
  5. Step 5: Solve for x
    x = 3,920,748,149.97/82,355.03
  6. Step 6: Final answer
    x = 47,607.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.