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Finding the Fourth Proportional to 72,769.36, 100,388.52 and 52,594.28

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Solution

The fourth proportional to 72,769.36, 100,388.52 and 52,594.28 is: 72,556.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,769.36 : 100,388.52 = 52,594.28 : x
  2. Step 2: Convert to fraction form
    72,769.36/100,388.52 = 52,594.28/x
  3. Step 3: Cross multiply
    72,769.36x = 100,388.52 × 52,594.28
  4. Step 4: Simplify right side
    72,769.36x = 5,279,862,377.87
  5. Step 5: Solve for x
    x = 5,279,862,377.87/72,769.36
  6. Step 6: Final answer
    x = 72,556.12

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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.