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Finding the Fourth Proportional to 78,582.96, 118,025.10 and 67,363.65

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Solution

The fourth proportional to 78,582.96, 118,025.10 and 67,363.65 is: 101,174.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,582.96 : 118,025.10 = 67,363.65 : x
  2. Step 2: Convert to fraction form
    78,582.96/118,025.10 = 67,363.65/x
  3. Step 3: Cross multiply
    78,582.96x = 118,025.10 × 67,363.65
  4. Step 4: Simplify right side
    78,582.96x = 7,950,601,527.62
  5. Step 5: Solve for x
    x = 7,950,601,527.62/78,582.96
  6. Step 6: Final answer
    x = 101,174.63

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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.