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Finding the Fourth Proportional to 68,640.81, 94,713.42 and 38,427.42

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Solution

The fourth proportional to 68,640.81, 94,713.42 and 38,427.42 is: 53,023.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,640.81 : 94,713.42 = 38,427.42 : x
  2. Step 2: Convert to fraction form
    68,640.81/94,713.42 = 38,427.42/x
  3. Step 3: Cross multiply
    68,640.81x = 94,713.42 × 38,427.42
  4. Step 4: Simplify right side
    68,640.81x = 3,639,592,369.98
  5. Step 5: Solve for x
    x = 3,639,592,369.98/68,640.81
  6. Step 6: Final answer
    x = 53,023.74

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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.