Home / 53,784.28-80,685.78-20,507.32

Finding the Fourth Proportional to 53,784.28, 80,685.78 and 20,507.32

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Solution

The fourth proportional to 53,784.28, 80,685.78 and 20,507.32 is: 30,764.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,784.28 : 80,685.78 = 20,507.32 : x
  2. Step 2: Convert to fraction form
    53,784.28/80,685.78 = 20,507.32/x
  3. Step 3: Cross multiply
    53,784.28x = 80,685.78 × 20,507.32
  4. Step 4: Simplify right side
    53,784.28x = 1,654,649,109.91
  5. Step 5: Solve for x
    x = 1,654,649,109.91/53,784.28
  6. Step 6: Final answer
    x = 30,764.55

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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.