Home / 45,609.76-68,436.30-31,591.36

Finding the Fourth Proportional to 45,609.76, 68,436.30 and 31,591.36

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Solution

The fourth proportional to 45,609.76, 68,436.30 and 31,591.36 is: 47,402.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,609.76 : 68,436.30 = 31,591.36 : x
  2. Step 2: Convert to fraction form
    45,609.76/68,436.30 = 31,591.36/x
  3. Step 3: Cross multiply
    45,609.76x = 68,436.30 × 31,591.36
  4. Step 4: Simplify right side
    45,609.76x = 2,161,995,790.37
  5. Step 5: Solve for x
    x = 2,161,995,790.37/45,609.76
  6. Step 6: Final answer
    x = 47,402.04

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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.