Home / 88,195.20-121,709.78-47,909.65

Finding the Fourth Proportional to 88,195.20, 121,709.78 and 47,909.65

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Solution

The fourth proportional to 88,195.20, 121,709.78 and 47,909.65 is: 66,115.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,195.20 : 121,709.78 = 47,909.65 : x
  2. Step 2: Convert to fraction form
    88,195.20/121,709.78 = 47,909.65/x
  3. Step 3: Cross multiply
    88,195.20x = 121,709.78 × 47,909.65
  4. Step 4: Simplify right side
    88,195.20x = 5,831,072,961.38
  5. Step 5: Solve for x
    x = 5,831,072,961.38/88,195.20
  6. Step 6: Final answer
    x = 66,115.54

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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.