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Finding the Fourth Proportional to 90,170.72, 124,424.83 and 49,879.02

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Solution

The fourth proportional to 90,170.72, 124,424.83 and 49,879.02 is: 68,827.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,170.72 : 124,424.83 = 49,879.02 : x
  2. Step 2: Convert to fraction form
    90,170.72/124,424.83 = 49,879.02/x
  3. Step 3: Cross multiply
    90,170.72x = 124,424.83 × 49,879.02
  4. Step 4: Simplify right side
    90,170.72x = 6,206,188,203.46
  5. Step 5: Solve for x
    x = 6,206,188,203.46/90,170.72
  6. Step 6: Final answer
    x = 68,827.09

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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.