Home / 87,590.02-120,867.28-57,327.42

Finding the Fourth Proportional to 87,590.02, 120,867.28 and 57,327.42

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Solution

The fourth proportional to 87,590.02, 120,867.28 and 57,327.42 is: 79,107.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,590.02 : 120,867.28 = 57,327.42 : x
  2. Step 2: Convert to fraction form
    87,590.02/120,867.28 = 57,327.42/x
  3. Step 3: Cross multiply
    87,590.02x = 120,867.28 × 57,327.42
  4. Step 4: Simplify right side
    87,590.02x = 6,929,009,324.82
  5. Step 5: Solve for x
    x = 6,929,009,324.82/87,590.02
  6. Step 6: Final answer
    x = 79,107.29

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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.