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Finding the Fourth Proportional to 71,526.34, 98,704.47 and 39,694.42

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Solution

The fourth proportional to 71,526.34, 98,704.47 and 39,694.42 is: 54,777.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,526.34 : 98,704.47 = 39,694.42 : x
  2. Step 2: Convert to fraction form
    71,526.34/98,704.47 = 39,694.42/x
  3. Step 3: Cross multiply
    71,526.34x = 98,704.47 × 39,694.42
  4. Step 4: Simplify right side
    71,526.34x = 3,918,016,688.06
  5. Step 5: Solve for x
    x = 3,918,016,688.06/71,526.34
  6. Step 6: Final answer
    x = 54,777.26

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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.