Home / 87,285.12-120,458.16-51,496.08

Finding the Fourth Proportional to 87,285.12, 120,458.16 and 51,496.08

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Solution

The fourth proportional to 87,285.12, 120,458.16 and 51,496.08 is: 71,067.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,285.12 : 120,458.16 = 51,496.08 : x
  2. Step 2: Convert to fraction form
    87,285.12/120,458.16 = 51,496.08/x
  3. Step 3: Cross multiply
    87,285.12x = 120,458.16 × 51,496.08
  4. Step 4: Simplify right side
    87,285.12x = 6,203,123,044.01
  5. Step 5: Solve for x
    x = 6,203,123,044.01/87,285.12
  6. Step 6: Final answer
    x = 71,067.36

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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.