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Finding the Fourth Proportional to 68,569.35, 102,817.04 and 31,108.98

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Solution

The fourth proportional to 68,569.35, 102,817.04 and 31,108.98 is: 46,646.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,569.35 : 102,817.04 = 31,108.98 : x
  2. Step 2: Convert to fraction form
    68,569.35/102,817.04 = 31,108.98/x
  3. Step 3: Cross multiply
    68,569.35x = 102,817.04 × 31,108.98
  4. Step 4: Simplify right side
    68,569.35x = 3,198,533,408.43
  5. Step 5: Solve for x
    x = 3,198,533,408.43/68,569.35
  6. Step 6: Final answer
    x = 46,646.69

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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.