Home / 81,082.76-111,905.42-45,275.09

Finding the Fourth Proportional to 81,082.76, 111,905.42 and 45,275.09

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Solution

The fourth proportional to 81,082.76, 111,905.42 and 45,275.09 is: 62,485.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,082.76 : 111,905.42 = 45,275.09 : x
  2. Step 2: Convert to fraction form
    81,082.76/111,905.42 = 45,275.09/x
  3. Step 3: Cross multiply
    81,082.76x = 111,905.42 × 45,275.09
  4. Step 4: Simplify right side
    81,082.76x = 5,066,527,176.09
  5. Step 5: Solve for x
    x = 5,066,527,176.09/81,082.76
  6. Step 6: Final answer
    x = 62,485.88

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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.