Home / 77,609.19-116,495.23-68,781

Finding the Fourth Proportional to 77,609.19, 116,495.23 and 68,781

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Solution

The fourth proportional to 77,609.19, 116,495.23 and 68,781 is: 103,243.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,609.19 : 116,495.23 = 68,781 : x
  2. Step 2: Convert to fraction form
    77,609.19/116,495.23 = 68,781/x
  3. Step 3: Cross multiply
    77,609.19x = 116,495.23 × 68,781
  4. Step 4: Simplify right side
    77,609.19x = 8,012,658,414.63
  5. Step 5: Solve for x
    x = 8,012,658,414.63/77,609.19
  6. Step 6: Final answer
    x = 103,243.68

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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.