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Finding the Fourth Proportional to 68,783.94, 94,925.79 and 38,578.95

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Solution

The fourth proportional to 68,783.94, 94,925.79 and 38,578.95 is: 53,241.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,783.94 : 94,925.79 = 38,578.95 : x
  2. Step 2: Convert to fraction form
    68,783.94/94,925.79 = 38,578.95/x
  3. Step 3: Cross multiply
    68,783.94x = 94,925.79 × 38,578.95
  4. Step 4: Simplify right side
    68,783.94x = 3,662,137,306.12
  5. Step 5: Solve for x
    x = 3,662,137,306.12/68,783.94
  6. Step 6: Final answer
    x = 53,241.17

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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.