Home / 81,617.10-122,425.65-42,251.10

Finding the Fourth Proportional to 81,617.10, 122,425.65 and 42,251.10

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Solution

The fourth proportional to 81,617.10, 122,425.65 and 42,251.10 is: 63,376.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,617.10 : 122,425.65 = 42,251.10 : x
  2. Step 2: Convert to fraction form
    81,617.10/122,425.65 = 42,251.10/x
  3. Step 3: Cross multiply
    81,617.10x = 122,425.65 × 42,251.10
  4. Step 4: Simplify right side
    81,617.10x = 5,172,618,380.72
  5. Step 5: Solve for x
    x = 5,172,618,380.72/81,617.10
  6. Step 6: Final answer
    x = 63,376.65

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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.