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Finding the Fourth Proportional to 84,260.88, 126,404.28 and 31,674.06

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Solution

The fourth proportional to 84,260.88, 126,404.28 and 31,674.06 is: 47,515.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,260.88 : 126,404.28 = 31,674.06 : x
  2. Step 2: Convert to fraction form
    84,260.88/126,404.28 = 31,674.06/x
  3. Step 3: Cross multiply
    84,260.88x = 126,404.28 × 31,674.06
  4. Step 4: Simplify right side
    84,260.88x = 4,003,736,748.98
  5. Step 5: Solve for x
    x = 4,003,736,748.98/84,260.88
  6. Step 6: Final answer
    x = 47,515.96

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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.