Home / 85,255.40-117,621.60-49,425.68

Finding the Fourth Proportional to 85,255.40, 117,621.60 and 49,425.68

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Solution

The fourth proportional to 85,255.40, 117,621.60 and 49,425.68 is: 68,189.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,255.40 : 117,621.60 = 49,425.68 : x
  2. Step 2: Convert to fraction form
    85,255.40/117,621.60 = 49,425.68/x
  3. Step 3: Cross multiply
    85,255.40x = 117,621.60 × 49,425.68
  4. Step 4: Simplify right side
    85,255.40x = 5,813,527,562.69
  5. Step 5: Solve for x
    x = 5,813,527,562.69/85,255.40
  6. Step 6: Final answer
    x = 68,189.55

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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.