Home / 56,239.68-84,371.88-21,179.28

Finding the Fourth Proportional to 56,239.68, 84,371.88 and 21,179.28

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Solution

The fourth proportional to 56,239.68, 84,371.88 and 21,179.28 is: 31,773.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,239.68 : 84,371.88 = 21,179.28 : x
  2. Step 2: Convert to fraction form
    56,239.68/84,371.88 = 21,179.28/x
  3. Step 3: Cross multiply
    56,239.68x = 84,371.88 × 21,179.28
  4. Step 4: Simplify right side
    56,239.68x = 1,786,935,670.65
  5. Step 5: Solve for x
    x = 1,786,935,670.65/56,239.68
  6. Step 6: Final answer
    x = 31,773.57

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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.