Home / 82,761.27-124,142.22-20,431.77

Finding the Fourth Proportional to 82,761.27, 124,142.22 and 20,431.77

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Solution

The fourth proportional to 82,761.27, 124,142.22 and 20,431.77 is: 30,647.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,761.27 : 124,142.22 = 20,431.77 : x
  2. Step 2: Convert to fraction form
    82,761.27/124,142.22 = 20,431.77/x
  3. Step 3: Cross multiply
    82,761.27x = 124,142.22 × 20,431.77
  4. Step 4: Simplify right side
    82,761.27x = 2,536,445,184.17
  5. Step 5: Solve for x
    x = 2,536,445,184.17/82,761.27
  6. Step 6: Final answer
    x = 30,647.73

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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.