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Finding the Fourth Proportional to 72,981.86, 100,717.85 and 41,150.07

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Solution

The fourth proportional to 72,981.86, 100,717.85 and 41,150.07 is: 56,788.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,981.86 : 100,717.85 = 41,150.07 : x
  2. Step 2: Convert to fraction form
    72,981.86/100,717.85 = 41,150.07/x
  3. Step 3: Cross multiply
    72,981.86x = 100,717.85 × 41,150.07
  4. Step 4: Simplify right side
    72,981.86x = 4,144,546,680.62
  5. Step 5: Solve for x
    x = 4,144,546,680.62/72,981.86
  6. Step 6: Final answer
    x = 56,788.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.