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Finding the Fourth Proportional to 68,064.67, 93,915.48 and 39,764.89

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Solution

The fourth proportional to 68,064.67, 93,915.48 and 39,764.89 is: 54,867.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,064.67 : 93,915.48 = 39,764.89 : x
  2. Step 2: Convert to fraction form
    68,064.67/93,915.48 = 39,764.89/x
  3. Step 3: Cross multiply
    68,064.67x = 93,915.48 × 39,764.89
  4. Step 4: Simplify right side
    68,064.67x = 3,734,538,731.50
  5. Step 5: Solve for x
    x = 3,734,538,731.50/68,064.67
  6. Step 6: Final answer
    x = 54,867.51

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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.