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Finding the Fourth Proportional to 71,606.84, 107,402 and 19,020.56

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Solution

The fourth proportional to 71,606.84, 107,402 and 19,020.56 is: 28,528.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,606.84 : 107,402 = 19,020.56 : x
  2. Step 2: Convert to fraction form
    71,606.84/107,402 = 19,020.56/x
  3. Step 3: Cross multiply
    71,606.84x = 107,402 × 19,020.56
  4. Step 4: Simplify right side
    71,606.84x = 2,042,846,185.12
  5. Step 5: Solve for x
    x = 2,042,846,185.12/71,606.84
  6. Step 6: Final answer
    x = 28,528.65

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.