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Finding the Fourth Proportional to 68,635, 94,717.90 and 38,419.56

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Solution

The fourth proportional to 68,635, 94,717.90 and 38,419.56 is: 53,019.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,635 : 94,717.90 = 38,419.56 : x
  2. Step 2: Convert to fraction form
    68,635/94,717.90 = 38,419.56/x
  3. Step 3: Cross multiply
    68,635x = 94,717.90 × 38,419.56
  4. Step 4: Simplify right side
    68,635x = 3,639,020,042.12
  5. Step 5: Solve for x
    x = 3,639,020,042.12/68,635
  6. Step 6: Final answer
    x = 53,019.89

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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.