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Finding the Fourth Proportional to 78,589.98, 117,882.81 and 34,216.65

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Solution

The fourth proportional to 78,589.98, 117,882.81 and 34,216.65 is: 51,324.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,589.98 : 117,882.81 = 34,216.65 : x
  2. Step 2: Convert to fraction form
    78,589.98/117,882.81 = 34,216.65/x
  3. Step 3: Cross multiply
    78,589.98x = 117,882.81 × 34,216.65
  4. Step 4: Simplify right side
    78,589.98x = 4,033,554,850.79
  5. Step 5: Solve for x
    x = 4,033,554,850.79/78,589.98
  6. Step 6: Final answer
    x = 51,324.03

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1.5x scale

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.