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Finding the Fourth Proportional to 72,330.96, 108,512.80 and 39,050.40

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Solution

The fourth proportional to 72,330.96, 108,512.80 and 39,050.40 is: 58,584.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,330.96 : 108,512.80 = 39,050.40 : x
  2. Step 2: Convert to fraction form
    72,330.96/108,512.80 = 39,050.40/x
  3. Step 3: Cross multiply
    72,330.96x = 108,512.80 × 39,050.40
  4. Step 4: Simplify right side
    72,330.96x = 4,237,468,245.12
  5. Step 5: Solve for x
    x = 4,237,468,245.12/72,330.96
  6. Step 6: Final answer
    x = 58,584.43

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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.