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Finding the Fourth Proportional to 82,704.70, 124,057.05 and 76,872.70

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Solution

The fourth proportional to 82,704.70, 124,057.05 and 76,872.70 is: 115,309.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,704.70 : 124,057.05 = 76,872.70 : x
  2. Step 2: Convert to fraction form
    82,704.70/124,057.05 = 76,872.70/x
  3. Step 3: Cross multiply
    82,704.70x = 124,057.05 × 76,872.70
  4. Step 4: Simplify right side
    82,704.70x = 9,536,600,387.54
  5. Step 5: Solve for x
    x = 9,536,600,387.54/82,704.70
  6. Step 6: Final answer
    x = 115,309.05

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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.