Home / 85,121.52-117,460.44-47,399.28

Finding the Fourth Proportional to 85,121.52, 117,460.44 and 47,399.28

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Solution

The fourth proportional to 85,121.52, 117,460.44 and 47,399.28 is: 65,406.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,121.52 : 117,460.44 = 47,399.28 : x
  2. Step 2: Convert to fraction form
    85,121.52/117,460.44 = 47,399.28/x
  3. Step 3: Cross multiply
    85,121.52x = 117,460.44 × 47,399.28
  4. Step 4: Simplify right side
    85,121.52x = 5,567,540,284.48
  5. Step 5: Solve for x
    x = 5,567,540,284.48/85,121.52
  6. Step 6: Final answer
    x = 65,406.97

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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.