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Finding the Fourth Proportional to 81,441.70, 112,249.16 and 54,168.98

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Solution

The fourth proportional to 81,441.70, 112,249.16 and 54,168.98 is: 74,659.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,441.70 : 112,249.16 = 54,168.98 : x
  2. Step 2: Convert to fraction form
    81,441.70/112,249.16 = 54,168.98/x
  3. Step 3: Cross multiply
    81,441.70x = 112,249.16 × 54,168.98
  4. Step 4: Simplify right side
    81,441.70x = 6,080,422,503.06
  5. Step 5: Solve for x
    x = 6,080,422,503.06/81,441.70
  6. Step 6: Final answer
    x = 74,659.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.