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Finding the Fourth Proportional to 68,678.79, 94,778.82 and 38,463.99

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Solution

The fourth proportional to 68,678.79, 94,778.82 and 38,463.99 is: 53,081.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,678.79 : 94,778.82 = 38,463.99 : x
  2. Step 2: Convert to fraction form
    68,678.79/94,778.82 = 38,463.99/x
  3. Step 3: Cross multiply
    68,678.79x = 94,778.82 × 38,463.99
  4. Step 4: Simplify right side
    68,678.79x = 3,645,571,584.69
  5. Step 5: Solve for x
    x = 3,645,571,584.69/68,678.79
  6. Step 6: Final answer
    x = 53,081.48

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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.