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Finding the Fourth Proportional to 68,854.86, 103,282.74 and 18,940.23

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Solution

The fourth proportional to 68,854.86, 103,282.74 and 18,940.23 is: 28,410.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,854.86 : 103,282.74 = 18,940.23 : x
  2. Step 2: Convert to fraction form
    68,854.86/103,282.74 = 18,940.23/x
  3. Step 3: Cross multiply
    68,854.86x = 103,282.74 × 18,940.23
  4. Step 4: Simplify right side
    68,854.86x = 1,956,198,239.52
  5. Step 5: Solve for x
    x = 1,956,198,239.52/68,854.86
  6. Step 6: Final answer
    x = 28,410.46

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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.