Home / 81,707.62-112,764.68-54,905.94

Finding the Fourth Proportional to 81,707.62, 112,764.68 and 54,905.94

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Solution

The fourth proportional to 81,707.62, 112,764.68 and 54,905.94 is: 75,775.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,707.62 : 112,764.68 = 54,905.94 : x
  2. Step 2: Convert to fraction form
    81,707.62/112,764.68 = 54,905.94/x
  3. Step 3: Cross multiply
    81,707.62x = 112,764.68 × 54,905.94
  4. Step 4: Simplify right side
    81,707.62x = 6,191,450,754.20
  5. Step 5: Solve for x
    x = 6,191,450,754.20/81,707.62
  6. Step 6: Final answer
    x = 75,775.68

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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.