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Finding the Fourth Proportional to 56,163.30, 84,239.16 and 18,719.31

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Solution

The fourth proportional to 56,163.30, 84,239.16 and 18,719.31 is: 28,077.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,163.30 : 84,239.16 = 18,719.31 : x
  2. Step 2: Convert to fraction form
    56,163.30/84,239.16 = 18,719.31/x
  3. Step 3: Cross multiply
    56,163.30x = 84,239.16 × 18,719.31
  4. Step 4: Simplify right side
    56,163.30x = 1,576,898,950.18
  5. Step 5: Solve for x
    x = 1,576,898,950.18/56,163.30
  6. Step 6: Final answer
    x = 28,077.04

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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.