Home / 82,420.20-123,639.96-26,240.64

Finding the Fourth Proportional to 82,420.20, 123,639.96 and 26,240.64

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Solution

The fourth proportional to 82,420.20, 123,639.96 and 26,240.64 is: 39,364.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,420.20 : 123,639.96 = 26,240.64 : x
  2. Step 2: Convert to fraction form
    82,420.20/123,639.96 = 26,240.64/x
  3. Step 3: Cross multiply
    82,420.20x = 123,639.96 × 26,240.64
  4. Step 4: Simplify right side
    82,420.20x = 3,244,391,679.97
  5. Step 5: Solve for x
    x = 3,244,391,679.97/82,420.20
  6. Step 6: Final answer
    x = 39,364.04

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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.