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Finding the Fourth Proportional to 55,388.80, 82,999.14 and 40,607.56

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Solution

The fourth proportional to 55,388.80, 82,999.14 and 40,607.56 is: 60,849.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,388.80 : 82,999.14 = 40,607.56 : x
  2. Step 2: Convert to fraction form
    55,388.80/82,999.14 = 40,607.56/x
  3. Step 3: Cross multiply
    55,388.80x = 82,999.14 × 40,607.56
  4. Step 4: Simplify right side
    55,388.80x = 3,370,392,557.50
  5. Step 5: Solve for x
    x = 3,370,392,557.50/55,388.80
  6. Step 6: Final answer
    x = 60,849.71

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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.