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Finding the Fourth Proportional to 67,081.95, 100,621.90 and 17,161.63

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Solution

The fourth proportional to 67,081.95, 100,621.90 and 17,161.63 is: 25,742.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,081.95 : 100,621.90 = 17,161.63 : x
  2. Step 2: Convert to fraction form
    67,081.95/100,621.90 = 17,161.63/x
  3. Step 3: Cross multiply
    67,081.95x = 100,621.90 × 17,161.63
  4. Step 4: Simplify right side
    67,081.95x = 1,726,835,587.59
  5. Step 5: Solve for x
    x = 1,726,835,587.59/67,081.95
  6. Step 6: Final answer
    x = 25,742.18

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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.