Home / 40,990.43-61,489.23-12,533.80

Finding the Fourth Proportional to 40,990.43, 61,489.23 and 12,533.80

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Solution

The fourth proportional to 40,990.43, 61,489.23 and 12,533.80 is: 18,801.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,990.43 : 61,489.23 = 12,533.80 : x
  2. Step 2: Convert to fraction form
    40,990.43/61,489.23 = 12,533.80/x
  3. Step 3: Cross multiply
    40,990.43x = 61,489.23 × 12,533.80
  4. Step 4: Simplify right side
    40,990.43x = 770,693,557.25
  5. Step 5: Solve for x
    x = 770,693,557.25/40,990.43
  6. Step 6: Final answer
    x = 18,801.79

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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.