Home / 85,067.12-117,390.12-47,340.56

Finding the Fourth Proportional to 85,067.12, 117,390.12 and 47,340.56

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Solution

The fourth proportional to 85,067.12, 117,390.12 and 47,340.56 is: 65,328.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,067.12 : 117,390.12 = 47,340.56 : x
  2. Step 2: Convert to fraction form
    85,067.12/117,390.12 = 47,340.56/x
  3. Step 3: Cross multiply
    85,067.12x = 117,390.12 × 47,340.56
  4. Step 4: Simplify right side
    85,067.12x = 5,557,314,019.27
  5. Step 5: Solve for x
    x = 5,557,314,019.27/85,067.12
  6. Step 6: Final answer
    x = 65,328.58

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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.