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Finding the Fourth Proportional to 72,680.41, 100,270.49 and 53,605.97

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Solution

The fourth proportional to 72,680.41, 100,270.49 and 53,605.97 is: 73,955.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,680.41 : 100,270.49 = 53,605.97 : x
  2. Step 2: Convert to fraction form
    72,680.41/100,270.49 = 53,605.97/x
  3. Step 3: Cross multiply
    72,680.41x = 100,270.49 × 53,605.97
  4. Step 4: Simplify right side
    72,680.41x = 5,375,096,878.83
  5. Step 5: Solve for x
    x = 5,375,096,878.83/72,680.41
  6. Step 6: Final answer
    x = 73,955.24

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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.