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Finding the Fourth Proportional to 67,195.32, 100,763.88 and 20,437.32

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Solution

The fourth proportional to 67,195.32, 100,763.88 and 20,437.32 is: 30,647.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,195.32 : 100,763.88 = 20,437.32 : x
  2. Step 2: Convert to fraction form
    67,195.32/100,763.88 = 20,437.32/x
  3. Step 3: Cross multiply
    67,195.32x = 100,763.88 × 20,437.32
  4. Step 4: Simplify right side
    67,195.32x = 2,059,343,660.00
  5. Step 5: Solve for x
    x = 2,059,343,660.00/67,195.32
  6. Step 6: Final answer
    x = 30,647.13

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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.