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Finding the Fourth Proportional to 90,240, 124,537.08 and 50,496

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Solution

The fourth proportional to 90,240, 124,537.08 and 50,496 is: 69,687.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,240 : 124,537.08 = 50,496 : x
  2. Step 2: Convert to fraction form
    90,240/124,537.08 = 50,496/x
  3. Step 3: Cross multiply
    90,240x = 124,537.08 × 50,496
  4. Step 4: Simplify right side
    90,240x = 6,288,624,391.68
  5. Step 5: Solve for x
    x = 6,288,624,391.68/90,240
  6. Step 6: Final answer
    x = 69,687.77

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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.