Home / 81,127.46-111,956.16-45,318.86

Finding the Fourth Proportional to 81,127.46, 111,956.16 and 45,318.86

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Solution

The fourth proportional to 81,127.46, 111,956.16 and 45,318.86 is: 62,540.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,127.46 : 111,956.16 = 45,318.86 : x
  2. Step 2: Convert to fraction form
    81,127.46/111,956.16 = 45,318.86/x
  3. Step 3: Cross multiply
    81,127.46x = 111,956.16 × 45,318.86
  4. Step 4: Simplify right side
    81,127.46x = 5,073,725,541.18
  5. Step 5: Solve for x
    x = 5,073,725,541.18/81,127.46
  6. Step 6: Final answer
    x = 62,540.17

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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.