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Finding the Fourth Proportional to 67,309.20, 100,962.90 and 20,562.30

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Solution

The fourth proportional to 67,309.20, 100,962.90 and 20,562.30 is: 30,843.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,309.20 : 100,962.90 = 20,562.30 : x
  2. Step 2: Convert to fraction form
    67,309.20/100,962.90 = 20,562.30/x
  3. Step 3: Cross multiply
    67,309.20x = 100,962.90 × 20,562.30
  4. Step 4: Simplify right side
    67,309.20x = 2,076,029,438.67
  5. Step 5: Solve for x
    x = 2,076,029,438.67/67,309.20
  6. Step 6: Final answer
    x = 30,843.18

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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.