Home / 57,115.80-85,635.30-30,466.20

Finding the Fourth Proportional to 57,115.80, 85,635.30 and 30,466.20

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Solution

The fourth proportional to 57,115.80, 85,635.30 and 30,466.20 is: 45,678.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,115.80 : 85,635.30 = 30,466.20 : x
  2. Step 2: Convert to fraction form
    57,115.80/85,635.30 = 30,466.20/x
  3. Step 3: Cross multiply
    57,115.80x = 85,635.30 × 30,466.20
  4. Step 4: Simplify right side
    57,115.80x = 2,608,982,176.86
  5. Step 5: Solve for x
    x = 2,608,982,176.86/57,115.80
  6. Step 6: Final answer
    x = 45,678.82

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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.