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Finding the Fourth Proportional to 73,968.50, 102,076.53 and 40,434.50

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Solution

The fourth proportional to 73,968.50, 102,076.53 and 40,434.50 is: 55,799.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,968.50 : 102,076.53 = 40,434.50 : x
  2. Step 2: Convert to fraction form
    73,968.50/102,076.53 = 40,434.50/x
  3. Step 3: Cross multiply
    73,968.50x = 102,076.53 × 40,434.50
  4. Step 4: Simplify right side
    73,968.50x = 4,127,413,452.29
  5. Step 5: Solve for x
    x = 4,127,413,452.29/73,968.50
  6. Step 6: Final answer
    x = 55,799.61

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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.