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Finding the Fourth Proportional to 75,912.89, 104,787.74 and 45,699.62

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Solution

The fourth proportional to 75,912.89, 104,787.74 and 45,699.62 is: 63,082.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,912.89 : 104,787.74 = 45,699.62 : x
  2. Step 2: Convert to fraction form
    75,912.89/104,787.74 = 45,699.62/x
  3. Step 3: Cross multiply
    75,912.89x = 104,787.74 × 45,699.62
  4. Step 4: Simplify right side
    75,912.89x = 4,788,759,488.97
  5. Step 5: Solve for x
    x = 4,788,759,488.97/75,912.89
  6. Step 6: Final answer
    x = 63,082.30

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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.