Home / 72,000.20-107,951.70-38,271.80

Finding the Fourth Proportional to 72,000.20, 107,951.70 and 38,271.80

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Solution

The fourth proportional to 72,000.20, 107,951.70 and 38,271.80 is: 57,381.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,000.20 : 107,951.70 = 38,271.80 : x
  2. Step 2: Convert to fraction form
    72,000.20/107,951.70 = 38,271.80/x
  3. Step 3: Cross multiply
    72,000.20x = 107,951.70 × 38,271.80
  4. Step 4: Simplify right side
    72,000.20x = 4,131,505,872.06
  5. Step 5: Solve for x
    x = 4,131,505,872.06/72,000.20
  6. Step 6: Final answer
    x = 57,381.87

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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.