Home / 87,539.22-120,853.89-57,817.62

Finding the Fourth Proportional to 87,539.22, 120,853.89 and 57,817.62

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Solution

The fourth proportional to 87,539.22, 120,853.89 and 57,817.62 is: 79,821.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,539.22 : 120,853.89 = 57,817.62 : x
  2. Step 2: Convert to fraction form
    87,539.22/120,853.89 = 57,817.62/x
  3. Step 3: Cross multiply
    87,539.22x = 120,853.89 × 57,817.62
  4. Step 4: Simplify right side
    87,539.22x = 6,987,484,287.54
  5. Step 5: Solve for x
    x = 6,987,484,287.54/87,539.22
  6. Step 6: Final answer
    x = 79,821.19

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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.