Home / 81,786.12-112,861.87-45,979.46

Finding the Fourth Proportional to 81,786.12, 112,861.87 and 45,979.46

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Solution

The fourth proportional to 81,786.12, 112,861.87 and 45,979.46 is: 63,449.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,786.12 : 112,861.87 = 45,979.46 : x
  2. Step 2: Convert to fraction form
    81,786.12/112,861.87 = 45,979.46/x
  3. Step 3: Cross multiply
    81,786.12x = 112,861.87 × 45,979.46
  4. Step 4: Simplify right side
    81,786.12x = 5,189,327,837.19
  5. Step 5: Solve for x
    x = 5,189,327,837.19/81,786.12
  6. Step 6: Final answer
    x = 63,449.98

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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.