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Finding the Fourth Proportional to 65,549.70, 98,313.75 and 28,115.82

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Solution

The fourth proportional to 65,549.70, 98,313.75 and 28,115.82 is: 42,169.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,549.70 : 98,313.75 = 28,115.82 : x
  2. Step 2: Convert to fraction form
    65,549.70/98,313.75 = 28,115.82/x
  3. Step 3: Cross multiply
    65,549.70x = 98,313.75 × 28,115.82
  4. Step 4: Simplify right side
    65,549.70x = 2,764,171,698.53
  5. Step 5: Solve for x
    x = 2,764,171,698.53/65,549.70
  6. Step 6: Final answer
    x = 42,169.10

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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.