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Finding the Fourth Proportional to 89,427.80, 123,407.79 and 50,662.01

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Solution

The fourth proportional to 89,427.80, 123,407.79 and 50,662.01 is: 69,912.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,427.80 : 123,407.79 = 50,662.01 : x
  2. Step 2: Convert to fraction form
    89,427.80/123,407.79 = 50,662.01/x
  3. Step 3: Cross multiply
    89,427.80x = 123,407.79 × 50,662.01
  4. Step 4: Simplify right side
    89,427.80x = 6,252,086,074.02
  5. Step 5: Solve for x
    x = 6,252,086,074.02/89,427.80
  6. Step 6: Final answer
    x = 69,912.11

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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.