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Finding the Fourth Proportional to 89,879, 124,033.02 and 50,135

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Solution

The fourth proportional to 89,879, 124,033.02 and 50,135 is: 69,186.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,879 : 124,033.02 = 50,135 : x
  2. Step 2: Convert to fraction form
    89,879/124,033.02 = 50,135/x
  3. Step 3: Cross multiply
    89,879x = 124,033.02 × 50,135
  4. Step 4: Simplify right side
    89,879x = 6,218,395,457.70
  5. Step 5: Solve for x
    x = 6,218,395,457.70/89,879
  6. Step 6: Final answer
    x = 69,186.30

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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.