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Finding the Fourth Proportional to 65,490.62, 98,153.73 and 28,006.61

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Solution

The fourth proportional to 65,490.62, 98,153.73 and 28,006.61 is: 41,974.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,490.62 : 98,153.73 = 28,006.61 : x
  2. Step 2: Convert to fraction form
    65,490.62/98,153.73 = 28,006.61/x
  3. Step 3: Cross multiply
    65,490.62x = 98,153.73 × 28,006.61
  4. Step 4: Simplify right side
    65,490.62x = 2,748,952,745.39
  5. Step 5: Solve for x
    x = 2,748,952,745.39/65,490.62
  6. Step 6: Final answer
    x = 41,974.75

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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.