Home / 66,912.20-100,336.52-38,840.86

Finding the Fourth Proportional to 66,912.20, 100,336.52 and 38,840.86

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Solution

The fourth proportional to 66,912.20, 100,336.52 and 38,840.86 is: 58,242.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,912.20 : 100,336.52 = 38,840.86 : x
  2. Step 2: Convert to fraction form
    66,912.20/100,336.52 = 38,840.86/x
  3. Step 3: Cross multiply
    66,912.20x = 100,336.52 × 38,840.86
  4. Step 4: Simplify right side
    66,912.20x = 3,897,156,726.21
  5. Step 5: Solve for x
    x = 3,897,156,726.21/66,912.20
  6. Step 6: Final answer
    x = 58,242.84

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1.5x scale

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.