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Finding the Fourth Proportional to 79,679.66, 119,519.54 and 76,220.33

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Solution

The fourth proportional to 79,679.66, 119,519.54 and 76,220.33 is: 114,330.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,679.66 : 119,519.54 = 76,220.33 : x
  2. Step 2: Convert to fraction form
    79,679.66/119,519.54 = 76,220.33/x
  3. Step 3: Cross multiply
    79,679.66x = 119,519.54 × 76,220.33
  4. Step 4: Simplify right side
    79,679.66x = 9,109,819,269.60
  5. Step 5: Solve for x
    x = 9,109,819,269.60/79,679.66
  6. Step 6: Final answer
    x = 114,330.55

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1.5x scale

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.