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Finding the Fourth Proportional to 71,998.73, 99,357.38 and 39,733.59

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Solution

The fourth proportional to 71,998.73, 99,357.38 and 39,733.59 is: 54,831.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,998.73 : 99,357.38 = 39,733.59 : x
  2. Step 2: Convert to fraction form
    71,998.73/99,357.38 = 39,733.59/x
  3. Step 3: Cross multiply
    71,998.73x = 99,357.38 × 39,733.59
  4. Step 4: Simplify right side
    71,998.73x = 3,947,825,350.73
  5. Step 5: Solve for x
    x = 3,947,825,350.73/71,998.73
  6. Step 6: Final answer
    x = 54,831.88

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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.