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Finding the Fourth Proportional to 68,381.61, 94,358.16 and 38,168.61

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Solution

The fourth proportional to 68,381.61, 94,358.16 and 38,168.61 is: 52,667.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,381.61 : 94,358.16 = 38,168.61 : x
  2. Step 2: Convert to fraction form
    68,381.61/94,358.16 = 38,168.61/x
  3. Step 3: Cross multiply
    68,381.61x = 94,358.16 × 38,168.61
  4. Step 4: Simplify right side
    68,381.61x = 3,601,519,809.36
  5. Step 5: Solve for x
    x = 3,601,519,809.36/68,381.61
  6. Step 6: Final answer
    x = 52,667.96

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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.