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Finding the Fourth Proportional to 72,381.86, 108,528.97 and 32,393.40

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Solution

The fourth proportional to 72,381.86, 108,528.97 and 32,393.40 is: 48,570.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,381.86 : 108,528.97 = 32,393.40 : x
  2. Step 2: Convert to fraction form
    72,381.86/108,528.97 = 32,393.40/x
  3. Step 3: Cross multiply
    72,381.86x = 108,528.97 × 32,393.40
  4. Step 4: Simplify right side
    72,381.86x = 3,515,622,255.81
  5. Step 5: Solve for x
    x = 3,515,622,255.81/72,381.86
  6. Step 6: Final answer
    x = 48,570.49

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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.