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Finding the Fourth Proportional to 72,334.80, 108,372.60 and 64,040.40

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Solution

The fourth proportional to 72,334.80, 108,372.60 and 64,040.40 is: 95,945.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,334.80 : 108,372.60 = 64,040.40 : x
  2. Step 2: Convert to fraction form
    72,334.80/108,372.60 = 64,040.40/x
  3. Step 3: Cross multiply
    72,334.80x = 108,372.60 × 64,040.40
  4. Step 4: Simplify right side
    72,334.80x = 6,940,224,653.04
  5. Step 5: Solve for x
    x = 6,940,224,653.04/72,334.80
  6. Step 6: Final answer
    x = 95,945.86

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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.