Home / 105,481.23-145,562.86-57,082.03

Finding the Fourth Proportional to 105,481.23, 145,562.86 and 57,082.03

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Solution

The fourth proportional to 105,481.23, 145,562.86 and 57,082.03 is: 78,772.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,481.23 : 145,562.86 = 57,082.03 : x
  2. Step 2: Convert to fraction form
    105,481.23/145,562.86 = 57,082.03/x
  3. Step 3: Cross multiply
    105,481.23x = 145,562.86 × 57,082.03
  4. Step 4: Simplify right side
    105,481.23x = 8,309,023,398.70
  5. Step 5: Solve for x
    x = 8,309,023,398.70/105,481.23
  6. Step 6: Final answer
    x = 78,772.53

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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.