Home / 82,114.74-123,172.11-19,785.24

Finding the Fourth Proportional to 82,114.74, 123,172.11 and 19,785.24

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Solution

The fourth proportional to 82,114.74, 123,172.11 and 19,785.24 is: 29,677.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,114.74 : 123,172.11 = 19,785.24 : x
  2. Step 2: Convert to fraction form
    82,114.74/123,172.11 = 19,785.24/x
  3. Step 3: Cross multiply
    82,114.74x = 123,172.11 × 19,785.24
  4. Step 4: Simplify right side
    82,114.74x = 2,436,989,757.66
  5. Step 5: Solve for x
    x = 2,436,989,757.66/82,114.74
  6. Step 6: Final answer
    x = 29,677.86

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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.