Home / 82,704.10-124,056.15-51,139.30

Finding the Fourth Proportional to 82,704.10, 124,056.15 and 51,139.30

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Solution

The fourth proportional to 82,704.10, 124,056.15 and 51,139.30 is: 76,708.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,704.10 : 124,056.15 = 51,139.30 : x
  2. Step 2: Convert to fraction form
    82,704.10/124,056.15 = 51,139.30/x
  3. Step 3: Cross multiply
    82,704.10x = 124,056.15 × 51,139.30
  4. Step 4: Simplify right side
    82,704.10x = 6,344,144,671.70
  5. Step 5: Solve for x
    x = 6,344,144,671.70/82,704.10
  6. Step 6: Final answer
    x = 76,708.95

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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.