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Finding the Fourth Proportional to 68,771.52, 94,898.88 and 38,142.72

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Solution

The fourth proportional to 68,771.52, 94,898.88 and 38,142.72 is: 52,633.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,771.52 : 94,898.88 = 38,142.72 : x
  2. Step 2: Convert to fraction form
    68,771.52/94,898.88 = 38,142.72/x
  3. Step 3: Cross multiply
    68,771.52x = 94,898.88 × 38,142.72
  4. Step 4: Simplify right side
    68,771.52x = 3,619,701,408.15
  5. Step 5: Solve for x
    x = 3,619,701,408.15/68,771.52
  6. Step 6: Final answer
    x = 52,633.73

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1.5x scale

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.