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Finding the Fourth Proportional to 90,458.78, 124,828.02 and 50,169.65

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Solution

The fourth proportional to 90,458.78, 124,828.02 and 50,169.65 is: 69,231.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,458.78 : 124,828.02 = 50,169.65 : x
  2. Step 2: Convert to fraction form
    90,458.78/124,828.02 = 50,169.65/x
  3. Step 3: Cross multiply
    90,458.78x = 124,828.02 × 50,169.65
  4. Step 4: Simplify right side
    90,458.78x = 6,262,577,449.45
  5. Step 5: Solve for x
    x = 6,262,577,449.45/90,458.78
  6. Step 6: Final answer
    x = 69,231.29

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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.