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Finding the Fourth Proportional to 99,744, 137,649.60 and 55,034.88

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Solution

The fourth proportional to 99,744, 137,649.60 and 55,034.88 is: 75,949.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,744 : 137,649.60 = 55,034.88 : x
  2. Step 2: Convert to fraction form
    99,744/137,649.60 = 55,034.88/x
  3. Step 3: Cross multiply
    99,744x = 137,649.60 × 55,034.88
  4. Step 4: Simplify right side
    99,744x = 7,575,529,218.05
  5. Step 5: Solve for x
    x = 7,575,529,218.05/99,744
  6. Step 6: Final answer
    x = 75,949.72

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.