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Finding the Fourth Proportional to 134,379.54, 201,562.02 and 40,878

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Solution

The fourth proportional to 134,379.54, 201,562.02 and 40,878 is: 61,314.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,379.54 : 201,562.02 = 40,878 : x
  2. Step 2: Convert to fraction form
    134,379.54/201,562.02 = 40,878/x
  3. Step 3: Cross multiply
    134,379.54x = 201,562.02 × 40,878
  4. Step 4: Simplify right side
    134,379.54x = 8,239,452,253.56
  5. Step 5: Solve for x
    x = 8,239,452,253.56/134,379.54
  6. Step 6: Final answer
    x = 61,314.78

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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.