Home / 65,131.28-89,882.78-36,450.72

Finding the Fourth Proportional to 65,131.28, 89,882.78 and 36,450.72

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Solution

The fourth proportional to 65,131.28, 89,882.78 and 36,450.72 is: 50,302.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,131.28 : 89,882.78 = 36,450.72 : x
  2. Step 2: Convert to fraction form
    65,131.28/89,882.78 = 36,450.72/x
  3. Step 3: Cross multiply
    65,131.28x = 89,882.78 × 36,450.72
  4. Step 4: Simplify right side
    65,131.28x = 3,276,291,414.93
  5. Step 5: Solve for x
    x = 3,276,291,414.93/65,131.28
  6. Step 6: Final answer
    x = 50,302.89

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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.