Home / 67,620.20-101,444.70-20,877.80

Finding the Fourth Proportional to 67,620.20, 101,444.70 and 20,877.80

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Solution

The fourth proportional to 67,620.20, 101,444.70 and 20,877.80 is: 31,321.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,620.20 : 101,444.70 = 20,877.80 : x
  2. Step 2: Convert to fraction form
    67,620.20/101,444.70 = 20,877.80/x
  3. Step 3: Cross multiply
    67,620.20x = 101,444.70 × 20,877.80
  4. Step 4: Simplify right side
    67,620.20x = 2,117,942,157.66
  5. Step 5: Solve for x
    x = 2,117,942,157.66/67,620.20
  6. Step 6: Final answer
    x = 31,321.15

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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.