Home / 112,979.32-169,469.96-28,739.57

Finding the Fourth Proportional to 112,979.32, 169,469.96 and 28,739.57

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Solution

The fourth proportional to 112,979.32, 169,469.96 and 28,739.57 is: 43,109.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,979.32 : 169,469.96 = 28,739.57 : x
  2. Step 2: Convert to fraction form
    112,979.32/169,469.96 = 28,739.57/x
  3. Step 3: Cross multiply
    112,979.32x = 169,469.96 × 28,739.57
  4. Step 4: Simplify right side
    112,979.32x = 4,870,492,787.27
  5. Step 5: Solve for x
    x = 4,870,492,787.27/112,979.32
  6. Step 6: Final answer
    x = 43,109.60

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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.