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Finding the Fourth Proportional to 78,296.58, 117,462.81 and 33,930.78

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Solution

The fourth proportional to 78,296.58, 117,462.81 and 33,930.78 is: 50,903.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,296.58 : 117,462.81 = 33,930.78 : x
  2. Step 2: Convert to fraction form
    78,296.58/117,462.81 = 33,930.78/x
  3. Step 3: Cross multiply
    78,296.58x = 117,462.81 × 33,930.78
  4. Step 4: Simplify right side
    78,296.58x = 3,985,604,764.29
  5. Step 5: Solve for x
    x = 3,985,604,764.29/78,296.58
  6. Step 6: Final answer
    x = 50,903.94

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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.