Home / 53,487.40-80,231.10-20,208.55

Finding the Fourth Proportional to 53,487.40, 80,231.10 and 20,208.55

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Solution

The fourth proportional to 53,487.40, 80,231.10 and 20,208.55 is: 30,312.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,487.40 : 80,231.10 = 20,208.55 : x
  2. Step 2: Convert to fraction form
    53,487.40/80,231.10 = 20,208.55/x
  3. Step 3: Cross multiply
    53,487.40x = 80,231.10 × 20,208.55
  4. Step 4: Simplify right side
    53,487.40x = 1,621,354,195.91
  5. Step 5: Solve for x
    x = 1,621,354,195.91/53,487.40
  6. Step 6: Final answer
    x = 30,312.83

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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.