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Finding the Fourth Proportional to 87,542.87, 120,804.20 and 51,736.21

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Solution

The fourth proportional to 87,542.87, 120,804.20 and 51,736.21 is: 71,393.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,542.87 : 120,804.20 = 51,736.21 : x
  2. Step 2: Convert to fraction form
    87,542.87/120,804.20 = 51,736.21/x
  3. Step 3: Cross multiply
    87,542.87x = 120,804.20 × 51,736.21
  4. Step 4: Simplify right side
    87,542.87x = 6,249,951,460.08
  5. Step 5: Solve for x
    x = 6,249,951,460.08/87,542.87
  6. Step 6: Final answer
    x = 71,393.04

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1.5x scale

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.