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Finding the Fourth Proportional to 40,172.60, 60,234.60 and 17,981.84

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Solution

The fourth proportional to 40,172.60, 60,234.60 and 17,981.84 is: 26,961.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,172.60 : 60,234.60 = 17,981.84 : x
  2. Step 2: Convert to fraction form
    40,172.60/60,234.60 = 17,981.84/x
  3. Step 3: Cross multiply
    40,172.60x = 60,234.60 × 17,981.84
  4. Step 4: Simplify right side
    40,172.60x = 1,083,128,939.66
  5. Step 5: Solve for x
    x = 1,083,128,939.66/40,172.60
  6. Step 6: Final answer
    x = 26,961.88

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1.5x scale

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.