Home / 85,625.38-118,174.20-47,911.78

Finding the Fourth Proportional to 85,625.38, 118,174.20 and 47,911.78

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Solution

The fourth proportional to 85,625.38, 118,174.20 and 47,911.78 is: 66,124.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,625.38 : 118,174.20 = 47,911.78 : x
  2. Step 2: Convert to fraction form
    85,625.38/118,174.20 = 47,911.78/x
  3. Step 3: Cross multiply
    85,625.38x = 118,174.20 × 47,911.78
  4. Step 4: Simplify right side
    85,625.38x = 5,661,936,272.08
  5. Step 5: Solve for x
    x = 5,661,936,272.08/85,625.38
  6. Step 6: Final answer
    x = 66,124.51

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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.