Home / 76,440.90-114,564.15-68,081.70

Finding the Fourth Proportional to 76,440.90, 114,564.15 and 68,081.70

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Solution

The fourth proportional to 76,440.90, 114,564.15 and 68,081.70 is: 102,035.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,440.90 : 114,564.15 = 68,081.70 : x
  2. Step 2: Convert to fraction form
    76,440.90/114,564.15 = 68,081.70/x
  3. Step 3: Cross multiply
    76,440.90x = 114,564.15 × 68,081.70
  4. Step 4: Simplify right side
    76,440.90x = 7,799,722,091.06
  5. Step 5: Solve for x
    x = 7,799,722,091.06/76,440.90
  6. Step 6: Final answer
    x = 102,035.98

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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.