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Finding the Fourth Proportional to 75,689.88, 113,340.96 and 63,178.80

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Solution

The fourth proportional to 75,689.88, 113,340.96 and 63,178.80 is: 94,606.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,689.88 : 113,340.96 = 63,178.80 : x
  2. Step 2: Convert to fraction form
    75,689.88/113,340.96 = 63,178.80/x
  3. Step 3: Cross multiply
    75,689.88x = 113,340.96 × 63,178.80
  4. Step 4: Simplify right side
    75,689.88x = 7,160,745,843.65
  5. Step 5: Solve for x
    x = 7,160,745,843.65/75,689.88
  6. Step 6: Final answer
    x = 94,606.38

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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.