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Finding the Fourth Proportional to 56,489.53, 84,683.96 and 21,453.79

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Solution

The fourth proportional to 56,489.53, 84,683.96 and 21,453.79 is: 32,161.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,489.53 : 84,683.96 = 21,453.79 : x
  2. Step 2: Convert to fraction form
    56,489.53/84,683.96 = 21,453.79/x
  3. Step 3: Cross multiply
    56,489.53x = 84,683.96 × 21,453.79
  4. Step 4: Simplify right side
    56,489.53x = 1,816,791,786.94
  5. Step 5: Solve for x
    x = 1,816,791,786.94/56,489.53
  6. Step 6: Final answer
    x = 32,161.57

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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.