Home / 81,127.88-111,956.20-45,317.96

Finding the Fourth Proportional to 81,127.88, 111,956.20 and 45,317.96

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Solution

The fourth proportional to 81,127.88, 111,956.20 and 45,317.96 is: 62,538.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,127.88 : 111,956.20 = 45,317.96 : x
  2. Step 2: Convert to fraction form
    81,127.88/111,956.20 = 45,317.96/x
  3. Step 3: Cross multiply
    81,127.88x = 111,956.20 × 45,317.96
  4. Step 4: Simplify right side
    81,127.88x = 5,073,626,593.35
  5. Step 5: Solve for x
    x = 5,073,626,593.35/81,127.88
  6. Step 6: Final answer
    x = 62,538.63

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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.