Home / 77,819.40-107,371.26-43,821

Finding the Fourth Proportional to 77,819.40, 107,371.26 and 43,821

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Solution

The fourth proportional to 77,819.40, 107,371.26 and 43,821 is: 60,461.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,819.40 : 107,371.26 = 43,821 : x
  2. Step 2: Convert to fraction form
    77,819.40/107,371.26 = 43,821/x
  3. Step 3: Cross multiply
    77,819.40x = 107,371.26 × 43,821
  4. Step 4: Simplify right side
    77,819.40x = 4,705,115,984.46
  5. Step 5: Solve for x
    x = 4,705,115,984.46/77,819.40
  6. Step 6: Final answer
    x = 60,461.99

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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.