Home / 81,035.31-111,836.50-45,228.65

Finding the Fourth Proportional to 81,035.31, 111,836.50 and 45,228.65

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Solution

The fourth proportional to 81,035.31, 111,836.50 and 45,228.65 is: 62,419.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,035.31 : 111,836.50 = 45,228.65 : x
  2. Step 2: Convert to fraction form
    81,035.31/111,836.50 = 45,228.65/x
  3. Step 3: Cross multiply
    81,035.31x = 111,836.50 × 45,228.65
  4. Step 4: Simplify right side
    81,035.31x = 5,058,213,872.55
  5. Step 5: Solve for x
    x = 5,058,213,872.55/81,035.31
  6. Step 6: Final answer
    x = 62,419.88

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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.