Home / 82,509.20-123,763.68-29,918.56

Finding the Fourth Proportional to 82,509.20, 123,763.68 and 29,918.56

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Solution

The fourth proportional to 82,509.20, 123,763.68 and 29,918.56 is: 44,877.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,509.20 : 123,763.68 = 29,918.56 : x
  2. Step 2: Convert to fraction form
    82,509.20/123,763.68 = 29,918.56/x
  3. Step 3: Cross multiply
    82,509.20x = 123,763.68 × 29,918.56
  4. Step 4: Simplify right side
    82,509.20x = 3,702,831,085.90
  5. Step 5: Solve for x
    x = 3,702,831,085.90/82,509.20
  6. Step 6: Final answer
    x = 44,877.80

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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.