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Finding the Fourth Proportional to 68,492.64, 94,506.48 and 38,678.88

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Solution

The fourth proportional to 68,492.64, 94,506.48 and 38,678.88 is: 53,369.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,492.64 : 94,506.48 = 38,678.88 : x
  2. Step 2: Convert to fraction form
    68,492.64/94,506.48 = 38,678.88/x
  3. Step 3: Cross multiply
    68,492.64x = 94,506.48 × 38,678.88
  4. Step 4: Simplify right side
    68,492.64x = 3,655,404,799.14
  5. Step 5: Solve for x
    x = 3,655,404,799.14/68,492.64
  6. Step 6: Final answer
    x = 53,369.31

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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.