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Finding the Fourth Proportional to 68,677.64, 94,758.90 and 38,869.64

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Solution

The fourth proportional to 68,677.64, 94,758.90 and 38,869.64 is: 53,630.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,677.64 : 94,758.90 = 38,869.64 : x
  2. Step 2: Convert to fraction form
    68,677.64/94,758.90 = 38,869.64/x
  3. Step 3: Cross multiply
    68,677.64x = 94,758.90 × 38,869.64
  4. Step 4: Simplify right side
    68,677.64x = 3,683,244,329.80
  5. Step 5: Solve for x
    x = 3,683,244,329.80/68,677.64
  6. Step 6: Final answer
    x = 53,630.91

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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.