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Finding the Fourth Proportional to 172,522.50, 258,783.76 and 47,863.50

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Solution

The fourth proportional to 172,522.50, 258,783.76 and 47,863.50 is: 71,795.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,522.50 : 258,783.76 = 47,863.50 : x
  2. Step 2: Convert to fraction form
    172,522.50/258,783.76 = 47,863.50/x
  3. Step 3: Cross multiply
    172,522.50x = 258,783.76 × 47,863.50
  4. Step 4: Simplify right side
    172,522.50x = 12,386,296,496.76
  5. Step 5: Solve for x
    x = 12,386,296,496.76/172,522.50
  6. Step 6: Final answer
    x = 71,795.25

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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.