Home / 90,078.81-124,306.57-49,791.53

Finding the Fourth Proportional to 90,078.81, 124,306.57 and 49,791.53

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Solution

The fourth proportional to 90,078.81, 124,306.57 and 49,791.53 is: 68,711.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,078.81 : 124,306.57 = 49,791.53 : x
  2. Step 2: Convert to fraction form
    90,078.81/124,306.57 = 49,791.53/x
  3. Step 3: Cross multiply
    90,078.81x = 124,306.57 × 49,791.53
  4. Step 4: Simplify right side
    90,078.81x = 6,189,414,495.64
  5. Step 5: Solve for x
    x = 6,189,414,495.64/90,078.81
  6. Step 6: Final answer
    x = 68,711.10

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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.