Home / 85,121.28-117,466.20-47,395.80

Finding the Fourth Proportional to 85,121.28, 117,466.20 and 47,395.80

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Solution

The fourth proportional to 85,121.28, 117,466.20 and 47,395.80 is: 65,405.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,121.28 : 117,466.20 = 47,395.80 : x
  2. Step 2: Convert to fraction form
    85,121.28/117,466.20 = 47,395.80/x
  3. Step 3: Cross multiply
    85,121.28x = 117,466.20 × 47,395.80
  4. Step 4: Simplify right side
    85,121.28x = 5,567,404,521.96
  5. Step 5: Solve for x
    x = 5,567,404,521.96/85,121.28
  6. Step 6: Final answer
    x = 65,405.55

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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.