Home / 109,879.40-164,819.10-39,742.31

Finding the Fourth Proportional to 109,879.40, 164,819.10 and 39,742.31

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Solution

The fourth proportional to 109,879.40, 164,819.10 and 39,742.31 is: 59,613.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,879.40 : 164,819.10 = 39,742.31 : x
  2. Step 2: Convert to fraction form
    109,879.40/164,819.10 = 39,742.31/x
  3. Step 3: Cross multiply
    109,879.40x = 164,819.10 × 39,742.31
  4. Step 4: Simplify right side
    109,879.40x = 6,550,291,766.12
  5. Step 5: Solve for x
    x = 6,550,291,766.12/109,879.40
  6. Step 6: Final answer
    x = 59,613.47

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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.