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Finding the Fourth Proportional to 71,040.52, 98,039.10 and 40,835.56

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Solution

The fourth proportional to 71,040.52, 98,039.10 and 40,835.56 is: 56,354.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,040.52 : 98,039.10 = 40,835.56 : x
  2. Step 2: Convert to fraction form
    71,040.52/98,039.10 = 40,835.56/x
  3. Step 3: Cross multiply
    71,040.52x = 98,039.10 × 40,835.56
  4. Step 4: Simplify right side
    71,040.52x = 4,003,481,550.40
  5. Step 5: Solve for x
    x = 4,003,481,550.40/71,040.52
  6. Step 6: Final answer
    x = 56,354.90

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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.