Home / 81,191.34-111,971.46-50,979.48

Finding the Fourth Proportional to 81,191.34, 111,971.46 and 50,979.48

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Solution

The fourth proportional to 81,191.34, 111,971.46 and 50,979.48 is: 70,306.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,191.34 : 111,971.46 = 50,979.48 : x
  2. Step 2: Convert to fraction form
    81,191.34/111,971.46 = 50,979.48/x
  3. Step 3: Cross multiply
    81,191.34x = 111,971.46 × 50,979.48
  4. Step 4: Simplify right side
    81,191.34x = 5,708,246,805.64
  5. Step 5: Solve for x
    x = 5,708,246,805.64/81,191.34
  6. Step 6: Final answer
    x = 70,306.10

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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.