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Finding the Fourth Proportional to 72,908.31, 100,606.28 and 41,082.87

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Solution

The fourth proportional to 72,908.31, 100,606.28 and 41,082.87 is: 56,690.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,908.31 : 100,606.28 = 41,082.87 : x
  2. Step 2: Convert to fraction form
    72,908.31/100,606.28 = 41,082.87/x
  3. Step 3: Cross multiply
    72,908.31x = 100,606.28 × 41,082.87
  4. Step 4: Simplify right side
    72,908.31x = 4,133,194,517.01
  5. Step 5: Solve for x
    x = 4,133,194,517.01/72,908.31
  6. Step 6: Final answer
    x = 56,690.31

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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.