Home / 40,155.43-55,364.11-25,789.90

Finding the Fourth Proportional to 40,155.43, 55,364.11 and 25,789.90

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Solution

The fourth proportional to 40,155.43, 55,364.11 and 25,789.90 is: 35,557.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,155.43 : 55,364.11 = 25,789.90 : x
  2. Step 2: Convert to fraction form
    40,155.43/55,364.11 = 25,789.90/x
  3. Step 3: Cross multiply
    40,155.43x = 55,364.11 × 25,789.90
  4. Step 4: Simplify right side
    40,155.43x = 1,427,834,860.49
  5. Step 5: Solve for x
    x = 1,427,834,860.49/40,155.43
  6. Step 6: Final answer
    x = 35,557.70

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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.