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Finding the Fourth Proportional to 68,654.79, 103,021.11 and 37,064.43

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Solution

The fourth proportional to 68,654.79, 103,021.11 and 37,064.43 is: 55,617.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,654.79 : 103,021.11 = 37,064.43 : x
  2. Step 2: Convert to fraction form
    68,654.79/103,021.11 = 37,064.43/x
  3. Step 3: Cross multiply
    68,654.79x = 103,021.11 × 37,064.43
  4. Step 4: Simplify right side
    68,654.79x = 3,818,418,720.12
  5. Step 5: Solve for x
    x = 3,818,418,720.12/68,654.79
  6. Step 6: Final answer
    x = 55,617.66

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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.