Home / 55,438.47-83,165.92-20,375.39

Finding the Fourth Proportional to 55,438.47, 83,165.92 and 20,375.39

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Solution

The fourth proportional to 55,438.47, 83,165.92 and 20,375.39 is: 30,566.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,438.47 : 83,165.92 = 20,375.39 : x
  2. Step 2: Convert to fraction form
    55,438.47/83,165.92 = 20,375.39/x
  3. Step 3: Cross multiply
    55,438.47x = 83,165.92 × 20,375.39
  4. Step 4: Simplify right side
    55,438.47x = 1,694,538,211.69
  5. Step 5: Solve for x
    x = 1,694,538,211.69/55,438.47
  6. Step 6: Final answer
    x = 30,566.11

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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.