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Finding the Fourth Proportional to 68,787.65, 94,934.87 and 45,816.20

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Solution

The fourth proportional to 68,787.65, 94,934.87 and 45,816.20 is: 63,231.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,787.65 : 94,934.87 = 45,816.20 : x
  2. Step 2: Convert to fraction form
    68,787.65/94,934.87 = 45,816.20/x
  3. Step 3: Cross multiply
    68,787.65x = 94,934.87 × 45,816.20
  4. Step 4: Simplify right side
    68,787.65x = 4,349,554,990.89
  5. Step 5: Solve for x
    x = 4,349,554,990.89/68,787.65
  6. Step 6: Final answer
    x = 63,231.63

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Why These Related Problems?

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