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Finding the Fourth Proportional to 68,993.12, 103,487.56 and 19,076.24

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Solution

The fourth proportional to 68,993.12, 103,487.56 and 19,076.24 is: 28,613.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,993.12 : 103,487.56 = 19,076.24 : x
  2. Step 2: Convert to fraction form
    68,993.12/103,487.56 = 19,076.24/x
  3. Step 3: Cross multiply
    68,993.12x = 103,487.56 × 19,076.24
  4. Step 4: Simplify right side
    68,993.12x = 1,974,153,531.57
  5. Step 5: Solve for x
    x = 1,974,153,531.57/68,993.12
  6. Step 6: Final answer
    x = 28,613.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.