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Finding the Fourth Proportional to 90,406.82, 124,764.36 and 50,124.33

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Solution

The fourth proportional to 90,406.82, 124,764.36 and 50,124.33 is: 69,173.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,406.82 : 124,764.36 = 50,124.33 : x
  2. Step 2: Convert to fraction form
    90,406.82/124,764.36 = 50,124.33/x
  3. Step 3: Cross multiply
    90,406.82x = 124,764.36 × 50,124.33
  4. Step 4: Simplify right side
    90,406.82x = 6,253,729,952.88
  5. Step 5: Solve for x
    x = 6,253,729,952.88/90,406.82
  6. Step 6: Final answer
    x = 69,173.21

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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.