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Finding the Fourth Proportional to 89,910, 124,075.80 and 50,166

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Solution

The fourth proportional to 89,910, 124,075.80 and 50,166 is: 69,229.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,910 : 124,075.80 = 50,166 : x
  2. Step 2: Convert to fraction form
    89,910/124,075.80 = 50,166/x
  3. Step 3: Cross multiply
    89,910x = 124,075.80 × 50,166
  4. Step 4: Simplify right side
    89,910x = 6,224,386,582.80
  5. Step 5: Solve for x
    x = 6,224,386,582.80/89,910
  6. Step 6: Final answer
    x = 69,229.08

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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.