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Finding the Fourth Proportional to 68,774.36, 94,913.16 and 38,561.66

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Solution

The fourth proportional to 68,774.36, 94,913.16 and 38,561.66 is: 53,217.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,774.36 : 94,913.16 = 38,561.66 : x
  2. Step 2: Convert to fraction form
    68,774.36/94,913.16 = 38,561.66/x
  3. Step 3: Cross multiply
    68,774.36x = 94,913.16 × 38,561.66
  4. Step 4: Simplify right side
    68,774.36x = 3,660,009,005.45
  5. Step 5: Solve for x
    x = 3,660,009,005.45/68,774.36
  6. Step 6: Final answer
    x = 53,217.64

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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.