Home / 40,819.86-61,229.79-13,120.02

Finding the Fourth Proportional to 40,819.86, 61,229.79 and 13,120.02

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Solution

The fourth proportional to 40,819.86, 61,229.79 and 13,120.02 is: 19,680.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,819.86 : 61,229.79 = 13,120.02 : x
  2. Step 2: Convert to fraction form
    40,819.86/61,229.79 = 13,120.02/x
  3. Step 3: Cross multiply
    40,819.86x = 61,229.79 × 13,120.02
  4. Step 4: Simplify right side
    40,819.86x = 803,336,069.40
  5. Step 5: Solve for x
    x = 803,336,069.40/40,819.86
  6. Step 6: Final answer
    x = 19,680.03

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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.