Home / 82,480.18-123,720.20-29,889.58

Finding the Fourth Proportional to 82,480.18, 123,720.20 and 29,889.58

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Solution

The fourth proportional to 82,480.18, 123,720.20 and 29,889.58 is: 44,834.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,480.18 : 123,720.20 = 29,889.58 : x
  2. Step 2: Convert to fraction form
    82,480.18/123,720.20 = 29,889.58/x
  3. Step 3: Cross multiply
    82,480.18x = 123,720.20 × 29,889.58
  4. Step 4: Simplify right side
    82,480.18x = 3,697,944,815.52
  5. Step 5: Solve for x
    x = 3,697,944,815.52/82,480.18
  6. Step 6: Final answer
    x = 44,834.34

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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.