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Finding the Fourth Proportional to 67,194.25, 100,805.95 and 20,445.91

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Solution

The fourth proportional to 67,194.25, 100,805.95 and 20,445.91 is: 30,673.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,194.25 : 100,805.95 = 20,445.91 : x
  2. Step 2: Convert to fraction form
    67,194.25/100,805.95 = 20,445.91/x
  3. Step 3: Cross multiply
    67,194.25x = 100,805.95 × 20,445.91
  4. Step 4: Simplify right side
    67,194.25x = 2,061,069,381.16
  5. Step 5: Solve for x
    x = 2,061,069,381.16/67,194.25
  6. Step 6: Final answer
    x = 30,673.30

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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.