Home / 86,999.12-130,507.32-27,819.92

Finding the Fourth Proportional to 86,999.12, 130,507.32 and 27,819.92

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Solution

The fourth proportional to 86,999.12, 130,507.32 and 27,819.92 is: 41,732.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,999.12 : 130,507.32 = 27,819.92 : x
  2. Step 2: Convert to fraction form
    86,999.12/130,507.32 = 27,819.92/x
  3. Step 3: Cross multiply
    86,999.12x = 130,507.32 × 27,819.92
  4. Step 4: Simplify right side
    86,999.12x = 3,630,703,201.81
  5. Step 5: Solve for x
    x = 3,630,703,201.81/86,999.12
  6. Step 6: Final answer
    x = 41,732.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.