Home / 84,219.76-126,324.24-31,624.72

Finding the Fourth Proportional to 84,219.76, 126,324.24 and 31,624.72

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Solution

The fourth proportional to 84,219.76, 126,324.24 and 31,624.72 is: 47,435.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,219.76 : 126,324.24 = 31,624.72 : x
  2. Step 2: Convert to fraction form
    84,219.76/126,324.24 = 31,624.72/x
  3. Step 3: Cross multiply
    84,219.76x = 126,324.24 × 31,624.72
  4. Step 4: Simplify right side
    84,219.76x = 3,994,968,719.21
  5. Step 5: Solve for x
    x = 3,994,968,719.21/84,219.76
  6. Step 6: Final answer
    x = 47,435.05

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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.