Home / 55,427.28-83,091.72-20,358.72

Finding the Fourth Proportional to 55,427.28, 83,091.72 and 20,358.72

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Solution

The fourth proportional to 55,427.28, 83,091.72 and 20,358.72 is: 30,520.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,427.28 : 83,091.72 = 20,358.72 : x
  2. Step 2: Convert to fraction form
    55,427.28/83,091.72 = 20,358.72/x
  3. Step 3: Cross multiply
    55,427.28x = 83,091.72 × 20,358.72
  4. Step 4: Simplify right side
    55,427.28x = 1,691,641,061.80
  5. Step 5: Solve for x
    x = 1,691,641,061.80/55,427.28
  6. Step 6: Final answer
    x = 30,520.01

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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.