Home / 87,619.30-120,788.74-62,425.06

Finding the Fourth Proportional to 87,619.30, 120,788.74 and 62,425.06

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Solution

The fourth proportional to 87,619.30, 120,788.74 and 62,425.06 is: 86,056.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,619.30 : 120,788.74 = 62,425.06 : x
  2. Step 2: Convert to fraction form
    87,619.30/120,788.74 = 62,425.06/x
  3. Step 3: Cross multiply
    87,619.30x = 120,788.74 × 62,425.06
  4. Step 4: Simplify right side
    87,619.30x = 7,540,244,341.82
  5. Step 5: Solve for x
    x = 7,540,244,341.82/87,619.30
  6. Step 6: Final answer
    x = 86,056.89

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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.