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Finding the Fourth Proportional to 67,138.76, 100,617.32 and 25,563.08

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Solution

The fourth proportional to 67,138.76, 100,617.32 and 25,563.08 is: 38,310.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,138.76 : 100,617.32 = 25,563.08 : x
  2. Step 2: Convert to fraction form
    67,138.76/100,617.32 = 25,563.08/x
  3. Step 3: Cross multiply
    67,138.76x = 100,617.32 × 25,563.08
  4. Step 4: Simplify right side
    67,138.76x = 2,572,088,600.55
  5. Step 5: Solve for x
    x = 2,572,088,600.55/67,138.76
  6. Step 6: Final answer
    x = 38,310.04

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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.