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Finding the Fourth Proportional to 68,717.68, 94,829.21 and 38,502.90

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Solution

The fourth proportional to 68,717.68, 94,829.21 and 38,502.90 is: 53,133.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,717.68 : 94,829.21 = 38,502.90 : x
  2. Step 2: Convert to fraction form
    68,717.68/94,829.21 = 38,502.90/x
  3. Step 3: Cross multiply
    68,717.68x = 94,829.21 × 38,502.90
  4. Step 4: Simplify right side
    68,717.68x = 3,651,199,541.58
  5. Step 5: Solve for x
    x = 3,651,199,541.58/68,717.68
  6. Step 6: Final answer
    x = 53,133.34

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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.