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Finding the Fourth Proportional to 72,769.86, 100,389.22 and 52,594.79

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Solution

The fourth proportional to 72,769.86, 100,389.22 and 52,594.79 is: 72,556.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,769.86 : 100,389.22 = 52,594.79 : x
  2. Step 2: Convert to fraction form
    72,769.86/100,389.22 = 52,594.79/x
  3. Step 3: Cross multiply
    72,769.86x = 100,389.22 × 52,594.79
  4. Step 4: Simplify right side
    72,769.86x = 5,279,949,179.24
  5. Step 5: Solve for x
    x = 5,279,949,179.24/72,769.86
  6. Step 6: Final answer
    x = 72,556.81

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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.