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Finding the Fourth Proportional to 82,729.67, 124,069.84 and 30,126.85

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Solution

The fourth proportional to 82,729.67, 124,069.84 and 30,126.85 is: 45,181.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,729.67 : 124,069.84 = 30,126.85 : x
  2. Step 2: Convert to fraction form
    82,729.67/124,069.84 = 30,126.85/x
  3. Step 3: Cross multiply
    82,729.67x = 124,069.84 × 30,126.85
  4. Step 4: Simplify right side
    82,729.67x = 3,737,833,073.71
  5. Step 5: Solve for x
    x = 3,737,833,073.71/82,729.67
  6. Step 6: Final answer
    x = 45,181.29

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1.5x scale

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.