Home / 56,847.78-85,282.20-19,405.80

Finding the Fourth Proportional to 56,847.78, 85,282.20 and 19,405.80

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Solution

The fourth proportional to 56,847.78, 85,282.20 and 19,405.80 is: 29,112.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,847.78 : 85,282.20 = 19,405.80 : x
  2. Step 2: Convert to fraction form
    56,847.78/85,282.20 = 19,405.80/x
  3. Step 3: Cross multiply
    56,847.78x = 85,282.20 × 19,405.80
  4. Step 4: Simplify right side
    56,847.78x = 1,654,969,316.76
  5. Step 5: Solve for x
    x = 1,654,969,316.76/56,847.78
  6. Step 6: Final answer
    x = 29,112.29

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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.