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Finding the Fourth Proportional to 91,214.66, 136,787.13 and 43,816.57

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Solution

The fourth proportional to 91,214.66, 136,787.13 and 43,816.57 is: 65,708.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,214.66 : 136,787.13 = 43,816.57 : x
  2. Step 2: Convert to fraction form
    91,214.66/136,787.13 = 43,816.57/x
  3. Step 3: Cross multiply
    91,214.66x = 136,787.13 × 43,816.57
  4. Step 4: Simplify right side
    91,214.66x = 5,993,542,514.78
  5. Step 5: Solve for x
    x = 5,993,542,514.78/91,214.66
  6. Step 6: Final answer
    x = 65,708.10

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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.