Home / 75,781.76-113,668.60-23,191.28

Finding the Fourth Proportional to 75,781.76, 113,668.60 and 23,191.28

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Solution

The fourth proportional to 75,781.76, 113,668.60 and 23,191.28 is: 34,785.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,781.76 : 113,668.60 = 23,191.28 : x
  2. Step 2: Convert to fraction form
    75,781.76/113,668.60 = 23,191.28/x
  3. Step 3: Cross multiply
    75,781.76x = 113,668.60 × 23,191.28
  4. Step 4: Simplify right side
    75,781.76x = 2,636,120,329.81
  5. Step 5: Solve for x
    x = 2,636,120,329.81/75,781.76
  6. Step 6: Final answer
    x = 34,785.68

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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.