Home / 53,611.68-80,405.28-20,335.44

Finding the Fourth Proportional to 53,611.68, 80,405.28 and 20,335.44

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Solution

The fourth proportional to 53,611.68, 80,405.28 and 20,335.44 is: 30,498.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,611.68 : 80,405.28 = 20,335.44 : x
  2. Step 2: Convert to fraction form
    53,611.68/80,405.28 = 20,335.44/x
  3. Step 3: Cross multiply
    53,611.68x = 80,405.28 × 20,335.44
  4. Step 4: Simplify right side
    53,611.68x = 1,635,076,747.12
  5. Step 5: Solve for x
    x = 1,635,076,747.12/53,611.68
  6. Step 6: Final answer
    x = 30,498.52

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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.