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Finding the Fourth Proportional to 68,646.39, 94,737.26 and 39,579.48

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Solution

The fourth proportional to 68,646.39, 94,737.26 and 39,579.48 is: 54,622.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,646.39 : 94,737.26 = 39,579.48 : x
  2. Step 2: Convert to fraction form
    68,646.39/94,737.26 = 39,579.48/x
  3. Step 3: Cross multiply
    68,646.39x = 94,737.26 × 39,579.48
  4. Step 4: Simplify right side
    68,646.39x = 3,749,651,487.42
  5. Step 5: Solve for x
    x = 3,749,651,487.42/68,646.39
  6. Step 6: Final answer
    x = 54,622.70

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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.