Home / 72,388.26-99,897.75-40,556.43

Finding the Fourth Proportional to 72,388.26, 99,897.75 and 40,556.43

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Solution

The fourth proportional to 72,388.26, 99,897.75 and 40,556.43 is: 55,968.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,388.26 : 99,897.75 = 40,556.43 : x
  2. Step 2: Convert to fraction form
    72,388.26/99,897.75 = 40,556.43/x
  3. Step 3: Cross multiply
    72,388.26x = 99,897.75 × 40,556.43
  4. Step 4: Simplify right side
    72,388.26x = 4,051,496,105.03
  5. Step 5: Solve for x
    x = 4,051,496,105.03/72,388.26
  6. Step 6: Final answer
    x = 55,968.97

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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.