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Finding the Fourth Proportional to 68,810, 94,959.24 and 39,002

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Solution

The fourth proportional to 68,810, 94,959.24 and 39,002 is: 53,823.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,810 : 94,959.24 = 39,002 : x
  2. Step 2: Convert to fraction form
    68,810/94,959.24 = 39,002/x
  3. Step 3: Cross multiply
    68,810x = 94,959.24 × 39,002
  4. Step 4: Simplify right side
    68,810x = 3,703,600,278.48
  5. Step 5: Solve for x
    x = 3,703,600,278.48/68,810
  6. Step 6: Final answer
    x = 53,823.58

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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.