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Finding the Fourth Proportional to 56,297.29, 84,432.66 and 20,739.29

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Solution

The fourth proportional to 56,297.29, 84,432.66 and 20,739.29 is: 31,104.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,297.29 : 84,432.66 = 20,739.29 : x
  2. Step 2: Convert to fraction form
    56,297.29/84,432.66 = 20,739.29/x
  3. Step 3: Cross multiply
    56,297.29x = 84,432.66 × 20,739.29
  4. Step 4: Simplify right side
    56,297.29x = 1,751,073,632.29
  5. Step 5: Solve for x
    x = 1,751,073,632.29/56,297.29
  6. Step 6: Final answer
    x = 31,104.05

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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.