Home / 82,711.40-123,992.02-30,083.68

Finding the Fourth Proportional to 82,711.40, 123,992.02 and 30,083.68

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Solution

The fourth proportional to 82,711.40, 123,992.02 and 30,083.68 is: 45,098.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,711.40 : 123,992.02 = 30,083.68 : x
  2. Step 2: Convert to fraction form
    82,711.40/123,992.02 = 30,083.68/x
  3. Step 3: Cross multiply
    82,711.40x = 123,992.02 × 30,083.68
  4. Step 4: Simplify right side
    82,711.40x = 3,730,136,252.23
  5. Step 5: Solve for x
    x = 3,730,136,252.23/82,711.40
  6. Step 6: Final answer
    x = 45,098.21

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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.