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Finding the Fourth Proportional to 90,396.77, 124,734.42 and 50,110.50

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Solution

The fourth proportional to 90,396.77, 124,734.42 and 50,110.50 is: 69,145.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,396.77 : 124,734.42 = 50,110.50 : x
  2. Step 2: Convert to fraction form
    90,396.77/124,734.42 = 50,110.50/x
  3. Step 3: Cross multiply
    90,396.77x = 124,734.42 × 50,110.50
  4. Step 4: Simplify right side
    90,396.77x = 6,250,504,153.41
  5. Step 5: Solve for x
    x = 6,250,504,153.41/90,396.77
  6. Step 6: Final answer
    x = 69,145.22

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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.