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Finding the Fourth Proportional to 56,352.66, 84,571.80 and 20,847.57

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Solution

The fourth proportional to 56,352.66, 84,571.80 and 20,847.57 is: 31,287.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,352.66 : 84,571.80 = 20,847.57 : x
  2. Step 2: Convert to fraction form
    56,352.66/84,571.80 = 20,847.57/x
  3. Step 3: Cross multiply
    56,352.66x = 84,571.80 × 20,847.57
  4. Step 4: Simplify right side
    56,352.66x = 1,763,116,520.53
  5. Step 5: Solve for x
    x = 1,763,116,520.53/56,352.66
  6. Step 6: Final answer
    x = 31,287.19

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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.