Home / 81,921.62-122,685.60-46,754.66

Finding the Fourth Proportional to 81,921.62, 122,685.60 and 46,754.66

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Solution

The fourth proportional to 81,921.62, 122,685.60 and 46,754.66 is: 70,019.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,921.62 : 122,685.60 = 46,754.66 : x
  2. Step 2: Convert to fraction form
    81,921.62/122,685.60 = 46,754.66/x
  3. Step 3: Cross multiply
    81,921.62x = 122,685.60 × 46,754.66
  4. Step 4: Simplify right side
    81,921.62x = 5,736,123,514.90
  5. Step 5: Solve for x
    x = 5,736,123,514.90/81,921.62
  6. Step 6: Final answer
    x = 70,019.65

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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.