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Finding the Fourth Proportional to 65,750.45, 98,631.14 and 28,311.44

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Solution

The fourth proportional to 65,750.45, 98,631.14 and 28,311.44 is: 42,469.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,750.45 : 98,631.14 = 28,311.44 : x
  2. Step 2: Convert to fraction form
    65,750.45/98,631.14 = 28,311.44/x
  3. Step 3: Cross multiply
    65,750.45x = 98,631.14 × 28,311.44
  4. Step 4: Simplify right side
    65,750.45x = 2,792,388,967.53
  5. Step 5: Solve for x
    x = 2,792,388,967.53/65,750.45
  6. Step 6: Final answer
    x = 42,469.51

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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.