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Finding the Fourth Proportional to 68,404.19, 102,536.55 and 38,759.40

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Solution

The fourth proportional to 68,404.19, 102,536.55 and 38,759.40 is: 58,099.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,404.19 : 102,536.55 = 38,759.40 : x
  2. Step 2: Convert to fraction form
    68,404.19/102,536.55 = 38,759.40/x
  3. Step 3: Cross multiply
    68,404.19x = 102,536.55 × 38,759.40
  4. Step 4: Simplify right side
    68,404.19x = 3,974,255,156.07
  5. Step 5: Solve for x
    x = 3,974,255,156.07/68,404.19
  6. Step 6: Final answer
    x = 58,099.59

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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.