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Finding the Fourth Proportional to 66,383.10, 99,769.05 and 65,216.70

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Solution

The fourth proportional to 66,383.10, 99,769.05 and 65,216.70 is: 98,016.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,383.10 : 99,769.05 = 65,216.70 : x
  2. Step 2: Convert to fraction form
    66,383.10/99,769.05 = 65,216.70/x
  3. Step 3: Cross multiply
    66,383.10x = 99,769.05 × 65,216.70
  4. Step 4: Simplify right side
    66,383.10x = 6,506,608,203.14
  5. Step 5: Solve for x
    x = 6,506,608,203.14/66,383.10
  6. Step 6: Final answer
    x = 98,016.03

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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.