Home / 40,690.45-61,032.22-12,609.88

Finding the Fourth Proportional to 40,690.45, 61,032.22 and 12,609.88

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Solution

The fourth proportional to 40,690.45, 61,032.22 and 12,609.88 is: 18,913.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,690.45 : 61,032.22 = 12,609.88 : x
  2. Step 2: Convert to fraction form
    40,690.45/61,032.22 = 12,609.88/x
  3. Step 3: Cross multiply
    40,690.45x = 61,032.22 × 12,609.88
  4. Step 4: Simplify right side
    40,690.45x = 769,608,970.33
  5. Step 5: Solve for x
    x = 769,608,970.33/40,690.45
  6. Step 6: Final answer
    x = 18,913.75

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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.