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Finding the Fourth Proportional to 68,109.40, 93,981.90 and 37,888.66

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Solution

The fourth proportional to 68,109.40, 93,981.90 and 37,888.66 is: 52,281.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,109.40 : 93,981.90 = 37,888.66 : x
  2. Step 2: Convert to fraction form
    68,109.40/93,981.90 = 37,888.66/x
  3. Step 3: Cross multiply
    68,109.40x = 93,981.90 × 37,888.66
  4. Step 4: Simplify right side
    68,109.40x = 3,560,848,255.25
  5. Step 5: Solve for x
    x = 3,560,848,255.25/68,109.40
  6. Step 6: Final answer
    x = 52,281.30

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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.