Home / 71,935.28-99,268.64-40,103.52

Finding the Fourth Proportional to 71,935.28, 99,268.64 and 40,103.52

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Solution

The fourth proportional to 71,935.28, 99,268.64 and 40,103.52 is: 55,341.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,935.28 : 99,268.64 = 40,103.52 : x
  2. Step 2: Convert to fraction form
    71,935.28/99,268.64 = 40,103.52/x
  3. Step 3: Cross multiply
    71,935.28x = 99,268.64 × 40,103.52
  4. Step 4: Simplify right side
    71,935.28x = 3,981,021,889.61
  5. Step 5: Solve for x
    x = 3,981,021,889.61/71,935.28
  6. Step 6: Final answer
    x = 55,341.72

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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.