Home / 86,987.06-120,030.91-51,164.00

Finding the Fourth Proportional to 86,987.06, 120,030.91 and 51,164.00

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Solution

The fourth proportional to 86,987.06, 120,030.91 and 51,164.00 is: 70,599.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,987.06 : 120,030.91 = 51,164.00 : x
  2. Step 2: Convert to fraction form
    86,987.06/120,030.91 = 51,164.00/x
  3. Step 3: Cross multiply
    86,987.06x = 120,030.91 × 51,164.00
  4. Step 4: Simplify right side
    86,987.06x = 6,141,260,879.09
  5. Step 5: Solve for x
    x = 6,141,260,879.09/86,987.06
  6. Step 6: Final answer
    x = 70,599.71

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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.