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Finding the Fourth Proportional to 68,108.61, 94,033.80 and 43,920.39

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Solution

The fourth proportional to 68,108.61, 94,033.80 and 43,920.39 is: 60,638.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,108.61 : 94,033.80 = 43,920.39 : x
  2. Step 2: Convert to fraction form
    68,108.61/94,033.80 = 43,920.39/x
  3. Step 3: Cross multiply
    68,108.61x = 94,033.80 × 43,920.39
  4. Step 4: Simplify right side
    68,108.61x = 4,130,001,169.18
  5. Step 5: Solve for x
    x = 4,130,001,169.18/68,108.61
  6. Step 6: Final answer
    x = 60,638.46

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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.