Home / 72,936.96-100,823.04-65,057.28

Finding the Fourth Proportional to 72,936.96, 100,823.04 and 65,057.28

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Solution

The fourth proportional to 72,936.96, 100,823.04 and 65,057.28 is: 89,930.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,936.96 : 100,823.04 = 65,057.28 : x
  2. Step 2: Convert to fraction form
    72,936.96/100,823.04 = 65,057.28/x
  3. Step 3: Cross multiply
    72,936.96x = 100,823.04 × 65,057.28
  4. Step 4: Simplify right side
    72,936.96x = 6,559,272,743.73
  5. Step 5: Solve for x
    x = 6,559,272,743.73/72,936.96
  6. Step 6: Final answer
    x = 89,930.71

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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.