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Finding the Fourth Proportional to 65,719.92, 90,659.80 and 44,491.76

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Solution

The fourth proportional to 65,719.92, 90,659.80 and 44,491.76 is: 61,375.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,719.92 : 90,659.80 = 44,491.76 : x
  2. Step 2: Convert to fraction form
    65,719.92/90,659.80 = 44,491.76/x
  3. Step 3: Cross multiply
    65,719.92x = 90,659.80 × 44,491.76
  4. Step 4: Simplify right side
    65,719.92x = 4,033,614,063.25
  5. Step 5: Solve for x
    x = 4,033,614,063.25/65,719.92
  6. Step 6: Final answer
    x = 61,375.82

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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.