Home / 81,734.88-122,616.90-31,842.12

Finding the Fourth Proportional to 81,734.88, 122,616.90 and 31,842.12

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Solution

The fourth proportional to 81,734.88, 122,616.90 and 31,842.12 is: 47,768.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,734.88 : 122,616.90 = 31,842.12 : x
  2. Step 2: Convert to fraction form
    81,734.88/122,616.90 = 31,842.12/x
  3. Step 3: Cross multiply
    81,734.88x = 122,616.90 × 31,842.12
  4. Step 4: Simplify right side
    81,734.88x = 3,904,382,043.83
  5. Step 5: Solve for x
    x = 3,904,382,043.83/81,734.88
  6. Step 6: Final answer
    x = 47,768.86

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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.