Home / 89,321.56-133,942.30-30,141.88

Finding the Fourth Proportional to 89,321.56, 133,942.30 and 30,141.88

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Solution

The fourth proportional to 89,321.56, 133,942.30 and 30,141.88 is: 45,199.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,321.56 : 133,942.30 = 30,141.88 : x
  2. Step 2: Convert to fraction form
    89,321.56/133,942.30 = 30,141.88/x
  3. Step 3: Cross multiply
    89,321.56x = 133,942.30 × 30,141.88
  4. Step 4: Simplify right side
    89,321.56x = 4,037,272,733.52
  5. Step 5: Solve for x
    x = 4,037,272,733.52/89,321.56
  6. Step 6: Final answer
    x = 45,199.31

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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.