Home / 71,938.28-99,272.78-40,106.52

Finding the Fourth Proportional to 71,938.28, 99,272.78 and 40,106.52

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Solution

The fourth proportional to 71,938.28, 99,272.78 and 40,106.52 is: 55,345.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,938.28 : 99,272.78 = 40,106.52 : x
  2. Step 2: Convert to fraction form
    71,938.28/99,272.78 = 40,106.52/x
  3. Step 3: Cross multiply
    71,938.28x = 99,272.78 × 40,106.52
  4. Step 4: Simplify right side
    71,938.28x = 3,981,485,736.53
  5. Step 5: Solve for x
    x = 3,981,485,736.53/71,938.28
  6. Step 6: Final answer
    x = 55,345.86

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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.