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Finding the Fourth Proportional to 65,512.80, 98,269.20 and 40,710.60

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Solution

The fourth proportional to 65,512.80, 98,269.20 and 40,710.60 is: 61,065.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,512.80 : 98,269.20 = 40,710.60 : x
  2. Step 2: Convert to fraction form
    65,512.80/98,269.20 = 40,710.60/x
  3. Step 3: Cross multiply
    65,512.80x = 98,269.20 × 40,710.60
  4. Step 4: Simplify right side
    65,512.80x = 4,000,598,093.52
  5. Step 5: Solve for x
    x = 4,000,598,093.52/65,512.80
  6. Step 6: Final answer
    x = 61,065.90

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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.