Home / 85,149.81-117,506.77-49,360.61

Finding the Fourth Proportional to 85,149.81, 117,506.77 and 49,360.61

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Solution

The fourth proportional to 85,149.81, 117,506.77 and 49,360.61 is: 68,117.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,149.81 : 117,506.77 = 49,360.61 : x
  2. Step 2: Convert to fraction form
    85,149.81/117,506.77 = 49,360.61/x
  3. Step 3: Cross multiply
    85,149.81x = 117,506.77 × 49,360.61
  4. Step 4: Simplify right side
    85,149.81x = 5,800,205,258.80
  5. Step 5: Solve for x
    x = 5,800,205,258.80/85,149.81
  6. Step 6: Final answer
    x = 68,117.65

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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.