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Finding the Fourth Proportional to 69,014.25, 103,545.68 and 33,978.51

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Solution

The fourth proportional to 69,014.25, 103,545.68 and 33,978.51 is: 50,979.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,014.25 : 103,545.68 = 33,978.51 : x
  2. Step 2: Convert to fraction form
    69,014.25/103,545.68 = 33,978.51/x
  3. Step 3: Cross multiply
    69,014.25x = 103,545.68 × 33,978.51
  4. Step 4: Simplify right side
    69,014.25x = 3,518,327,753.44
  5. Step 5: Solve for x
    x = 3,518,327,753.44/69,014.25
  6. Step 6: Final answer
    x = 50,979.73

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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.