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Finding the Fourth Proportional to 68,760, 94,888.80 and 38,952

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Solution

The fourth proportional to 68,760, 94,888.80 and 38,952 is: 53,753.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,760 : 94,888.80 = 38,952 : x
  2. Step 2: Convert to fraction form
    68,760/94,888.80 = 38,952/x
  3. Step 3: Cross multiply
    68,760x = 94,888.80 × 38,952
  4. Step 4: Simplify right side
    68,760x = 3,696,108,537.60
  5. Step 5: Solve for x
    x = 3,696,108,537.60/68,760
  6. Step 6: Final answer
    x = 53,753.76

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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.