Home / 53,486.40-80,229.60-20,207.55

Finding the Fourth Proportional to 53,486.40, 80,229.60 and 20,207.55

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Solution

The fourth proportional to 53,486.40, 80,229.60 and 20,207.55 is: 30,311.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,486.40 : 80,229.60 = 20,207.55 : x
  2. Step 2: Convert to fraction form
    53,486.40/80,229.60 = 20,207.55/x
  3. Step 3: Cross multiply
    53,486.40x = 80,229.60 × 20,207.55
  4. Step 4: Simplify right side
    53,486.40x = 1,621,243,653.48
  5. Step 5: Solve for x
    x = 1,621,243,653.48/53,486.40
  6. Step 6: Final answer
    x = 30,311.33

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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.