Home / 40,877.76-61,433.28-20,115.84

Finding the Fourth Proportional to 40,877.76, 61,433.28 and 20,115.84

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Solution

The fourth proportional to 40,877.76, 61,433.28 and 20,115.84 is: 30,231.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,877.76 : 61,433.28 = 20,115.84 : x
  2. Step 2: Convert to fraction form
    40,877.76/61,433.28 = 20,115.84/x
  3. Step 3: Cross multiply
    40,877.76x = 61,433.28 × 20,115.84
  4. Step 4: Simplify right side
    40,877.76x = 1,235,782,031.16
  5. Step 5: Solve for x
    x = 1,235,782,031.16/40,877.76
  6. Step 6: Final answer
    x = 30,231.16

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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.