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Finding the Fourth Proportional to 56,195.28, 84,228.12 and 21,112.56

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Solution

The fourth proportional to 56,195.28, 84,228.12 and 21,112.56 is: 31,644.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,195.28 : 84,228.12 = 21,112.56 : x
  2. Step 2: Convert to fraction form
    56,195.28/84,228.12 = 21,112.56/x
  3. Step 3: Cross multiply
    56,195.28x = 84,228.12 × 21,112.56
  4. Step 4: Simplify right side
    56,195.28x = 1,778,271,237.19
  5. Step 5: Solve for x
    x = 1,778,271,237.19/56,195.28
  6. Step 6: Final answer
    x = 31,644.49

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.