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Finding the Fourth Proportional to 56,559.76, 84,813 and 20,996.44

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Solution

The fourth proportional to 56,559.76, 84,813 and 20,996.44 is: 31,484.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,559.76 : 84,813 = 20,996.44 : x
  2. Step 2: Convert to fraction form
    56,559.76/84,813 = 20,996.44/x
  3. Step 3: Cross multiply
    56,559.76x = 84,813 × 20,996.44
  4. Step 4: Simplify right side
    56,559.76x = 1,780,771,065.72
  5. Step 5: Solve for x
    x = 1,780,771,065.72/56,559.76
  6. Step 6: Final answer
    x = 31,484.77

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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.