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Finding the Fourth Proportional to 32,728.53, 45,161.85 and 21,971.22

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Solution

The fourth proportional to 32,728.53, 45,161.85 and 21,971.22 is: 30,317.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,728.53 : 45,161.85 = 21,971.22 : x
  2. Step 2: Convert to fraction form
    32,728.53/45,161.85 = 21,971.22/x
  3. Step 3: Cross multiply
    32,728.53x = 45,161.85 × 21,971.22
  4. Step 4: Simplify right side
    32,728.53x = 992,261,236.05
  5. Step 5: Solve for x
    x = 992,261,236.05/32,728.53
  6. Step 6: Final answer
    x = 30,317.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.