Home / 81,262.28-121,874.28-45,738.71

Finding the Fourth Proportional to 81,262.28, 121,874.28 and 45,738.71

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Solution

The fourth proportional to 81,262.28, 121,874.28 and 45,738.71 is: 68,597.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,262.28 : 121,874.28 = 45,738.71 : x
  2. Step 2: Convert to fraction form
    81,262.28/121,874.28 = 45,738.71/x
  3. Step 3: Cross multiply
    81,262.28x = 121,874.28 × 45,738.71
  4. Step 4: Simplify right side
    81,262.28x = 5,574,372,349.38
  5. Step 5: Solve for x
    x = 5,574,372,349.38/81,262.28
  6. Step 6: Final answer
    x = 68,597.29

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.