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Finding the Fourth Proportional to 65,745.70, 98,618.55 and 45,625.30

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Solution

The fourth proportional to 65,745.70, 98,618.55 and 45,625.30 is: 68,437.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,745.70 : 98,618.55 = 45,625.30 : x
  2. Step 2: Convert to fraction form
    65,745.70/98,618.55 = 45,625.30/x
  3. Step 3: Cross multiply
    65,745.70x = 98,618.55 × 45,625.30
  4. Step 4: Simplify right side
    65,745.70x = 4,499,500,929.32
  5. Step 5: Solve for x
    x = 4,499,500,929.32/65,745.70
  6. Step 6: Final answer
    x = 68,437.95

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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.