Home / 83,917.42-115,571.01-69,638.74

Finding the Fourth Proportional to 83,917.42, 115,571.01 and 69,638.74

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Solution

The fourth proportional to 83,917.42, 115,571.01 and 69,638.74 is: 95,906.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,917.42 : 115,571.01 = 69,638.74 : x
  2. Step 2: Convert to fraction form
    83,917.42/115,571.01 = 69,638.74/x
  3. Step 3: Cross multiply
    83,917.42x = 115,571.01 × 69,638.74
  4. Step 4: Simplify right side
    83,917.42x = 8,048,219,516.93
  5. Step 5: Solve for x
    x = 8,048,219,516.93/83,917.42
  6. Step 6: Final answer
    x = 95,906.42

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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.