Home / 85,149.81-117,506.79-49,360.65

Finding the Fourth Proportional to 85,149.81, 117,506.79 and 49,360.65

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Solution

The fourth proportional to 85,149.81, 117,506.79 and 49,360.65 is: 68,117.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,149.81 : 117,506.79 = 49,360.65 : x
  2. Step 2: Convert to fraction form
    85,149.81/117,506.79 = 49,360.65/x
  3. Step 3: Cross multiply
    85,149.81x = 117,506.79 × 49,360.65
  4. Step 4: Simplify right side
    85,149.81x = 5,800,211,533.81
  5. Step 5: Solve for x
    x = 5,800,211,533.81/85,149.81
  6. Step 6: Final answer
    x = 68,117.73

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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.