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Finding the Fourth Proportional to 77,668.67, 107,588.60 and 76,094.03

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Solution

The fourth proportional to 77,668.67, 107,588.60 and 76,094.03 is: 105,407.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,668.67 : 107,588.60 = 76,094.03 : x
  2. Step 2: Convert to fraction form
    77,668.67/107,588.60 = 76,094.03/x
  3. Step 3: Cross multiply
    77,668.67x = 107,588.60 × 76,094.03
  4. Step 4: Simplify right side
    77,668.67x = 8,186,850,757.94
  5. Step 5: Solve for x
    x = 8,186,850,757.94/77,668.67
  6. Step 6: Final answer
    x = 105,407.37

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.