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Finding the Fourth Proportional to 91,851.60, 137,799 and 28,669.44

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Solution

The fourth proportional to 91,851.60, 137,799 and 28,669.44 is: 43,010.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,851.60 : 137,799 = 28,669.44 : x
  2. Step 2: Convert to fraction form
    91,851.60/137,799 = 28,669.44/x
  3. Step 3: Cross multiply
    91,851.60x = 137,799 × 28,669.44
  4. Step 4: Simplify right side
    91,851.60x = 3,950,620,162.56
  5. Step 5: Solve for x
    x = 3,950,620,162.56/91,851.60
  6. Step 6: Final answer
    x = 43,010.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.