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Finding the Fourth Proportional to 86,589.82, 119,035.25 and 74,445.57

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Solution

The fourth proportional to 86,589.82, 119,035.25 and 74,445.57 is: 102,340.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,589.82 : 119,035.25 = 74,445.57 : x
  2. Step 2: Convert to fraction form
    86,589.82/119,035.25 = 74,445.57/x
  3. Step 3: Cross multiply
    86,589.82x = 119,035.25 × 74,445.57
  4. Step 4: Simplify right side
    86,589.82x = 8,861,646,425.43
  5. Step 5: Solve for x
    x = 8,861,646,425.43/86,589.82
  6. Step 6: Final answer
    x = 102,340.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.