Home / 78,431.49-108,229.77-44,440.65

Finding the Fourth Proportional to 78,431.49, 108,229.77 and 44,440.65

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Solution

The fourth proportional to 78,431.49, 108,229.77 and 44,440.65 is: 61,324.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,431.49 : 108,229.77 = 44,440.65 : x
  2. Step 2: Convert to fraction form
    78,431.49/108,229.77 = 44,440.65/x
  3. Step 3: Cross multiply
    78,431.49x = 108,229.77 × 44,440.65
  4. Step 4: Simplify right side
    78,431.49x = 4,809,801,328.15
  5. Step 5: Solve for x
    x = 4,809,801,328.15/78,431.49
  6. Step 6: Final answer
    x = 61,324.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.