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Finding the Fourth Proportional to 78,018.67, 107,668.53 and 44,035.43

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Solution

The fourth proportional to 78,018.67, 107,668.53 and 44,035.43 is: 60,770.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,018.67 : 107,668.53 = 44,035.43 : x
  2. Step 2: Convert to fraction form
    78,018.67/107,668.53 = 44,035.43/x
  3. Step 3: Cross multiply
    78,018.67x = 107,668.53 × 44,035.43
  4. Step 4: Simplify right side
    78,018.67x = 4,741,229,477.68
  5. Step 5: Solve for x
    x = 4,741,229,477.68/78,018.67
  6. Step 6: Final answer
    x = 60,770.45

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.