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Finding the Fourth Proportional to 170,520.80, 255,780.80 and 45,861.92

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Solution

The fourth proportional to 170,520.80, 255,780.80 and 45,861.92 is: 68,792.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,520.80 : 255,780.80 = 45,861.92 : x
  2. Step 2: Convert to fraction form
    170,520.80/255,780.80 = 45,861.92/x
  3. Step 3: Cross multiply
    170,520.80x = 255,780.80 × 45,861.92
  4. Step 4: Simplify right side
    170,520.80x = 11,730,598,587.14
  5. Step 5: Solve for x
    x = 11,730,598,587.14/170,520.80
  6. Step 6: Final answer
    x = 68,792.77

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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.