Home / 55,439.76-83,156.94-20,377.20

Finding the Fourth Proportional to 55,439.76, 83,156.94 and 20,377.20

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Solution

The fourth proportional to 55,439.76, 83,156.94 and 20,377.20 is: 30,564.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,439.76 : 83,156.94 = 20,377.20 : x
  2. Step 2: Convert to fraction form
    55,439.76/83,156.94 = 20,377.20/x
  3. Step 3: Cross multiply
    55,439.76x = 83,156.94 × 20,377.20
  4. Step 4: Simplify right side
    55,439.76x = 1,694,505,597.77
  5. Step 5: Solve for x
    x = 1,694,505,597.77/55,439.76
  6. Step 6: Final answer
    x = 30,564.81

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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.