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Finding the Fourth Proportional to 84,037.50, 126,058.68 and 21,708

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Solution

The fourth proportional to 84,037.50, 126,058.68 and 21,708 is: 32,562.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,037.50 : 126,058.68 = 21,708 : x
  2. Step 2: Convert to fraction form
    84,037.50/126,058.68 = 21,708/x
  3. Step 3: Cross multiply
    84,037.50x = 126,058.68 × 21,708
  4. Step 4: Simplify right side
    84,037.50x = 2,736,481,825.44
  5. Step 5: Solve for x
    x = 2,736,481,825.44/84,037.50
  6. Step 6: Final answer
    x = 32,562.63

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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.