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Finding the Fourth Proportional to 172,317.16, 258,487.96 and 45,956.68

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Solution

The fourth proportional to 172,317.16, 258,487.96 and 45,956.68 is: 68,938.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,317.16 : 258,487.96 = 45,956.68 : x
  2. Step 2: Convert to fraction form
    172,317.16/258,487.96 = 45,956.68/x
  3. Step 3: Cross multiply
    172,317.16x = 258,487.96 × 45,956.68
  4. Step 4: Simplify right side
    172,317.16x = 11,879,248,461.57
  5. Step 5: Solve for x
    x = 11,879,248,461.57/172,317.16
  6. Step 6: Final answer
    x = 68,938.28

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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.