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Finding the Fourth Proportional to 40,272, 55,575.36 and 22,608

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Solution

The fourth proportional to 40,272, 55,575.36 and 22,608 is: 31,199.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,272 : 55,575.36 = 22,608 : x
  2. Step 2: Convert to fraction form
    40,272/55,575.36 = 22,608/x
  3. Step 3: Cross multiply
    40,272x = 55,575.36 × 22,608
  4. Step 4: Simplify right side
    40,272x = 1,256,447,738.88
  5. Step 5: Solve for x
    x = 1,256,447,738.88/40,272
  6. Step 6: Final answer
    x = 31,199.04

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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.