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Finding the Fourth Proportional to 74,371.86, 102,634.56 and 40,837.86

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Solution

The fourth proportional to 74,371.86, 102,634.56 and 40,837.86 is: 56,357.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,371.86 : 102,634.56 = 40,837.86 : x
  2. Step 2: Convert to fraction form
    74,371.86/102,634.56 = 40,837.86/x
  3. Step 3: Cross multiply
    74,371.86x = 102,634.56 × 40,837.86
  4. Step 4: Simplify right side
    74,371.86x = 4,191,375,792.44
  5. Step 5: Solve for x
    x = 4,191,375,792.44/74,371.86
  6. Step 6: Final answer
    x = 56,357.01

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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.