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Finding the Fourth Proportional to 68,066.80, 93,918.41 and 39,767.02

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Solution

The fourth proportional to 68,066.80, 93,918.41 and 39,767.02 is: 54,870.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,066.80 : 93,918.41 = 39,767.02 : x
  2. Step 2: Convert to fraction form
    68,066.80/93,918.41 = 39,767.02/x
  3. Step 3: Cross multiply
    68,066.80x = 93,918.41 × 39,767.02
  4. Step 4: Simplify right side
    68,066.80x = 3,734,855,288.84
  5. Step 5: Solve for x
    x = 3,734,855,288.84/68,066.80
  6. Step 6: Final answer
    x = 54,870.44

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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.