Home / 90,081.40-124,318.81-49,794.33

Finding the Fourth Proportional to 90,081.40, 124,318.81 and 49,794.33

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Solution

The fourth proportional to 90,081.40, 124,318.81 and 49,794.33 is: 68,719.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,081.40 : 124,318.81 = 49,794.33 : x
  2. Step 2: Convert to fraction form
    90,081.40/124,318.81 = 49,794.33/x
  3. Step 3: Cross multiply
    90,081.40x = 124,318.81 × 49,794.33
  4. Step 4: Simplify right side
    90,081.40x = 6,190,371,850.35
  5. Step 5: Solve for x
    x = 6,190,371,850.35/90,081.40
  6. Step 6: Final answer
    x = 68,719.76

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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.