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Finding the Fourth Proportional to 76,678.86, 114,865.12 and 60,910.59

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Solution

The fourth proportional to 76,678.86, 114,865.12 and 60,910.59 is: 91,244.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,678.86 : 114,865.12 = 60,910.59 : x
  2. Step 2: Convert to fraction form
    76,678.86/114,865.12 = 60,910.59/x
  3. Step 3: Cross multiply
    76,678.86x = 114,865.12 × 60,910.59
  4. Step 4: Simplify right side
    76,678.86x = 6,996,502,229.62
  5. Step 5: Solve for x
    x = 6,996,502,229.62/76,678.86
  6. Step 6: Final answer
    x = 91,244.21

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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.