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Finding the Fourth Proportional to 90,409.77, 124,764.91 and 50,123.54

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Solution

The fourth proportional to 90,409.77, 124,764.91 and 50,123.54 is: 69,170.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,409.77 : 124,764.91 = 50,123.54 : x
  2. Step 2: Convert to fraction form
    90,409.77/124,764.91 = 50,123.54/x
  3. Step 3: Cross multiply
    90,409.77x = 124,764.91 × 50,123.54
  4. Step 4: Simplify right side
    90,409.77x = 6,253,659,143.58
  5. Step 5: Solve for x
    x = 6,253,659,143.58/90,409.77
  6. Step 6: Final answer
    x = 69,170.17

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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.