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Finding the Fourth Proportional to 81,159.40, 112,034.46 and 49,338.46

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Solution

The fourth proportional to 81,159.40, 112,034.46 and 49,338.46 is: 68,108.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,159.40 : 112,034.46 = 49,338.46 : x
  2. Step 2: Convert to fraction form
    81,159.40/112,034.46 = 49,338.46/x
  3. Step 3: Cross multiply
    81,159.40x = 112,034.46 × 49,338.46
  4. Step 4: Simplify right side
    81,159.40x = 5,527,607,723.33
  5. Step 5: Solve for x
    x = 5,527,607,723.33/81,159.40
  6. Step 6: Final answer
    x = 68,108.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.