Home / 77,919.64-107,529.18-49,641.80

Finding the Fourth Proportional to 77,919.64, 107,529.18 and 49,641.80

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Solution

The fourth proportional to 77,919.64, 107,529.18 and 49,641.80 is: 68,505.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,919.64 : 107,529.18 = 49,641.80 : x
  2. Step 2: Convert to fraction form
    77,919.64/107,529.18 = 49,641.80/x
  3. Step 3: Cross multiply
    77,919.64x = 107,529.18 × 49,641.80
  4. Step 4: Simplify right side
    77,919.64x = 5,337,942,047.72
  5. Step 5: Solve for x
    x = 5,337,942,047.72/77,919.64
  6. Step 6: Final answer
    x = 68,505.73

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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.