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Finding the Fourth Proportional to 68,454, 94,464.34 and 39,776.06

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Solution

The fourth proportional to 68,454, 94,464.34 and 39,776.06 is: 54,889.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,454 : 94,464.34 = 39,776.06 : x
  2. Step 2: Convert to fraction form
    68,454/94,464.34 = 39,776.06/x
  3. Step 3: Cross multiply
    68,454x = 94,464.34 × 39,776.06
  4. Step 4: Simplify right side
    68,454x = 3,757,419,255.70
  5. Step 5: Solve for x
    x = 3,757,419,255.70/68,454
  6. Step 6: Final answer
    x = 54,889.70

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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.