Home / 81,322.00-121,959.59-28,011.83

Finding the Fourth Proportional to 81,322.00, 121,959.59 and 28,011.83

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Solution

The fourth proportional to 81,322.00, 121,959.59 and 28,011.83 is: 42,009.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,322.00 : 121,959.59 = 28,011.83 : x
  2. Step 2: Convert to fraction form
    81,322.00/121,959.59 = 28,011.83/x
  3. Step 3: Cross multiply
    81,322.00x = 121,959.59 × 28,011.83
  4. Step 4: Simplify right side
    81,322.00x = 3,416,310,768.75
  5. Step 5: Solve for x
    x = 3,416,310,768.75/81,322.00
  6. Step 6: Final answer
    x = 42,009.67

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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.