Home / 81,144.48-121,731.08-36,769.44

Finding the Fourth Proportional to 81,144.48, 121,731.08 and 36,769.44

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Solution

The fourth proportional to 81,144.48, 121,731.08 and 36,769.44 is: 55,160.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,144.48 : 121,731.08 = 36,769.44 : x
  2. Step 2: Convert to fraction form
    81,144.48/121,731.08 = 36,769.44/x
  3. Step 3: Cross multiply
    81,144.48x = 121,731.08 × 36,769.44
  4. Step 4: Simplify right side
    81,144.48x = 4,475,983,642.20
  5. Step 5: Solve for x
    x = 4,475,983,642.20/81,144.48
  6. Step 6: Final answer
    x = 55,160.67

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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.