Home / 56,727.20-85,090.80-19,791.20

Finding the Fourth Proportional to 56,727.20, 85,090.80 and 19,791.20

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Solution

The fourth proportional to 56,727.20, 85,090.80 and 19,791.20 is: 29,686.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,727.20 : 85,090.80 = 19,791.20 : x
  2. Step 2: Convert to fraction form
    56,727.20/85,090.80 = 19,791.20/x
  3. Step 3: Cross multiply
    56,727.20x = 85,090.80 × 19,791.20
  4. Step 4: Simplify right side
    56,727.20x = 1,684,049,040.96
  5. Step 5: Solve for x
    x = 1,684,049,040.96/56,727.20
  6. Step 6: Final answer
    x = 29,686.80

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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.