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Finding the Fourth Proportional to 68,655.52, 94,722.60 and 38,436.40

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Solution

The fourth proportional to 68,655.52, 94,722.60 and 38,436.40 is: 53,029.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,655.52 : 94,722.60 = 38,436.40 : x
  2. Step 2: Convert to fraction form
    68,655.52/94,722.60 = 38,436.40/x
  3. Step 3: Cross multiply
    68,655.52x = 94,722.60 × 38,436.40
  4. Step 4: Simplify right side
    68,655.52x = 3,640,795,742.64
  5. Step 5: Solve for x
    x = 3,640,795,742.64/68,655.52
  6. Step 6: Final answer
    x = 53,029.91

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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.