Home / 81,723.23-112,780.96-45,912.52

Finding the Fourth Proportional to 81,723.23, 112,780.96 and 45,912.52

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Solution

The fourth proportional to 81,723.23, 112,780.96 and 45,912.52 is: 63,360.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,723.23 : 112,780.96 = 45,912.52 : x
  2. Step 2: Convert to fraction form
    81,723.23/112,780.96 = 45,912.52/x
  3. Step 3: Cross multiply
    81,723.23x = 112,780.96 × 45,912.52
  4. Step 4: Simplify right side
    81,723.23x = 5,178,058,107.81
  5. Step 5: Solve for x
    x = 5,178,058,107.81/81,723.23
  6. Step 6: Final answer
    x = 63,360.91

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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.