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Finding the Fourth Proportional to 67,188.65, 100,797.96 and 20,445.17

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Solution

The fourth proportional to 67,188.65, 100,797.96 and 20,445.17 is: 30,672.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,188.65 : 100,797.96 = 20,445.17 : x
  2. Step 2: Convert to fraction form
    67,188.65/100,797.96 = 20,445.17/x
  3. Step 3: Cross multiply
    67,188.65x = 100,797.96 × 20,445.17
  4. Step 4: Simplify right side
    67,188.65x = 2,060,830,923.86
  5. Step 5: Solve for x
    x = 2,060,830,923.86/67,188.65
  6. Step 6: Final answer
    x = 30,672.31

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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.