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Finding the Fourth Proportional to 72,073.31, 108,110.35 and 47,270.43

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Solution

The fourth proportional to 72,073.31, 108,110.35 and 47,270.43 is: 70,905.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,073.31 : 108,110.35 = 47,270.43 : x
  2. Step 2: Convert to fraction form
    72,073.31/108,110.35 = 47,270.43/x
  3. Step 3: Cross multiply
    72,073.31x = 108,110.35 × 47,270.43
  4. Step 4: Simplify right side
    72,073.31x = 5,110,422,191.40
  5. Step 5: Solve for x
    x = 5,110,422,191.40/72,073.31
  6. Step 6: Final answer
    x = 70,905.89

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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.