Home / 75,668.16-113,508.78-19,507.80

Finding the Fourth Proportional to 75,668.16, 113,508.78 and 19,507.80

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Solution

The fourth proportional to 75,668.16, 113,508.78 and 19,507.80 is: 29,263.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,668.16 : 113,508.78 = 19,507.80 : x
  2. Step 2: Convert to fraction form
    75,668.16/113,508.78 = 19,507.80/x
  3. Step 3: Cross multiply
    75,668.16x = 113,508.78 × 19,507.80
  4. Step 4: Simplify right side
    75,668.16x = 2,214,306,930.99
  5. Step 5: Solve for x
    x = 2,214,306,930.99/75,668.16
  6. Step 6: Final answer
    x = 29,263.39

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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.