Home / 90,027.38-124,231.39-49,740.71

Finding the Fourth Proportional to 90,027.38, 124,231.39 and 49,740.71

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Solution

The fourth proportional to 90,027.38, 124,231.39 and 49,740.71 is: 68,638.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,027.38 : 124,231.39 = 49,740.71 : x
  2. Step 2: Convert to fraction form
    90,027.38/124,231.39 = 49,740.71/x
  3. Step 3: Cross multiply
    90,027.38x = 124,231.39 × 49,740.71
  4. Step 4: Simplify right side
    90,027.38x = 6,179,356,797.38
  5. Step 5: Solve for x
    x = 6,179,356,797.38/90,027.38
  6. Step 6: Final answer
    x = 68,638.64

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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.