Home / 77,845.70-107,447.11-50,689.57

Finding the Fourth Proportional to 77,845.70, 107,447.11 and 50,689.57

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Solution

The fourth proportional to 77,845.70, 107,447.11 and 50,689.57 is: 69,964.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,845.70 : 107,447.11 = 50,689.57 : x
  2. Step 2: Convert to fraction form
    77,845.70/107,447.11 = 50,689.57/x
  3. Step 3: Cross multiply
    77,845.70x = 107,447.11 × 50,689.57
  4. Step 4: Simplify right side
    77,845.70x = 5,446,447,012.96
  5. Step 5: Solve for x
    x = 5,446,447,012.96/77,845.70
  6. Step 6: Final answer
    x = 69,964.65

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1.5x scale

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.