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Finding the Fourth Proportional to 172,549.95, 258,863.80 and 52,617.50

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Solution

The fourth proportional to 172,549.95, 258,863.80 and 52,617.50 is: 78,938.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,549.95 : 258,863.80 = 52,617.50 : x
  2. Step 2: Convert to fraction form
    172,549.95/258,863.80 = 52,617.50/x
  3. Step 3: Cross multiply
    172,549.95x = 258,863.80 × 52,617.50
  4. Step 4: Simplify right side
    172,549.95x = 13,620,765,640.03
  5. Step 5: Solve for x
    x = 13,620,765,640.03/172,549.95
  6. Step 6: Final answer
    x = 78,938.10

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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.