Home / 85,346.70-117,778.35-47,620.95

Finding the Fourth Proportional to 85,346.70, 117,778.35 and 47,620.95

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Solution

The fourth proportional to 85,346.70, 117,778.35 and 47,620.95 is: 65,716.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,346.70 : 117,778.35 = 47,620.95 : x
  2. Step 2: Convert to fraction form
    85,346.70/117,778.35 = 47,620.95/x
  3. Step 3: Cross multiply
    85,346.70x = 117,778.35 × 47,620.95
  4. Step 4: Simplify right side
    85,346.70x = 5,608,716,916.43
  5. Step 5: Solve for x
    x = 5,608,716,916.43/85,346.70
  6. Step 6: Final answer
    x = 65,716.86

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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.