Home / 72,287.28-99,755.73-40,456.41

Finding the Fourth Proportional to 72,287.28, 99,755.73 and 40,456.41

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Solution

The fourth proportional to 72,287.28, 99,755.73 and 40,456.41 is: 55,829.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,287.28 : 99,755.73 = 40,456.41 : x
  2. Step 2: Convert to fraction form
    72,287.28/99,755.73 = 40,456.41/x
  3. Step 3: Cross multiply
    72,287.28x = 99,755.73 × 40,456.41
  4. Step 4: Simplify right side
    72,287.28x = 4,035,758,712.73
  5. Step 5: Solve for x
    x = 4,035,758,712.73/72,287.28
  6. Step 6: Final answer
    x = 55,829.44

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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.