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Finding the Fourth Proportional to 68,123.62, 94,021.86 and 39,823.84

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Solution

The fourth proportional to 68,123.62, 94,021.86 and 39,823.84 is: 54,963.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,123.62 : 94,021.86 = 39,823.84 : x
  2. Step 2: Convert to fraction form
    68,123.62/94,021.86 = 39,823.84/x
  3. Step 3: Cross multiply
    68,123.62x = 94,021.86 × 39,823.84
  4. Step 4: Simplify right side
    68,123.62x = 3,744,311,509.14
  5. Step 5: Solve for x
    x = 3,744,311,509.14/68,123.62
  6. Step 6: Final answer
    x = 54,963.48

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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.