Home / 86,987.00-120,039.99-51,179.31

Finding the Fourth Proportional to 86,987.00, 120,039.99 and 51,179.31

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Solution

The fourth proportional to 86,987.00, 120,039.99 and 51,179.31 is: 70,626.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,987.00 : 120,039.99 = 51,179.31 : x
  2. Step 2: Convert to fraction form
    86,987.00/120,039.99 = 51,179.31/x
  3. Step 3: Cross multiply
    86,987.00x = 120,039.99 × 51,179.31
  4. Step 4: Simplify right side
    86,987.00x = 6,143,563,860.61
  5. Step 5: Solve for x
    x = 6,143,563,860.61/86,987.00
  6. Step 6: Final answer
    x = 70,626.23

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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.