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Finding the Fourth Proportional to 68,767.76, 94,757.28 and 55,284.90

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Solution

The fourth proportional to 68,767.76, 94,757.28 and 55,284.90 is: 76,178.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,767.76 : 94,757.28 = 55,284.90 : x
  2. Step 2: Convert to fraction form
    68,767.76/94,757.28 = 55,284.90/x
  3. Step 3: Cross multiply
    68,767.76x = 94,757.28 × 55,284.90
  4. Step 4: Simplify right side
    68,767.76x = 5,238,646,749.07
  5. Step 5: Solve for x
    x = 5,238,646,749.07/68,767.76
  6. Step 6: Final answer
    x = 76,178.82

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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.