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Finding the Fourth Proportional to 60,991.92, 91,471.44 and 21,543.84

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Solution

The fourth proportional to 60,991.92, 91,471.44 and 21,543.84 is: 32,309.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,991.92 : 91,471.44 = 21,543.84 : x
  2. Step 2: Convert to fraction form
    60,991.92/91,471.44 = 21,543.84/x
  3. Step 3: Cross multiply
    60,991.92x = 91,471.44 × 21,543.84
  4. Step 4: Simplify right side
    60,991.92x = 1,970,646,067.93
  5. Step 5: Solve for x
    x = 1,970,646,067.93/60,991.92
  6. Step 6: Final answer
    x = 32,309.95

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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.