Home / 120,632.75-180,949.80-31,885.31

Finding the Fourth Proportional to 120,632.75, 180,949.80 and 31,885.31

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Solution

The fourth proportional to 120,632.75, 180,949.80 and 31,885.31 is: 47,828.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,632.75 : 180,949.80 = 31,885.31 : x
  2. Step 2: Convert to fraction form
    120,632.75/180,949.80 = 31,885.31/x
  3. Step 3: Cross multiply
    120,632.75x = 180,949.80 × 31,885.31
  4. Step 4: Simplify right side
    120,632.75x = 5,769,640,467.44
  5. Step 5: Solve for x
    x = 5,769,640,467.44/120,632.75
  6. Step 6: Final answer
    x = 47,828.15

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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.