Home / 85,390.17-117,840.32-47,149.62

Finding the Fourth Proportional to 85,390.17, 117,840.32 and 47,149.62

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Solution

The fourth proportional to 85,390.17, 117,840.32 and 47,149.62 is: 65,067.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,390.17 : 117,840.32 = 47,149.62 : x
  2. Step 2: Convert to fraction form
    85,390.17/117,840.32 = 47,149.62/x
  3. Step 3: Cross multiply
    85,390.17x = 117,840.32 × 47,149.62
  4. Step 4: Simplify right side
    85,390.17x = 5,556,126,072.93
  5. Step 5: Solve for x
    x = 5,556,126,072.93/85,390.17
  6. Step 6: Final answer
    x = 65,067.51

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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.