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Finding the Fourth Proportional to 79,656.78, 119,446.20 and 45,458.58

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Solution

The fourth proportional to 79,656.78, 119,446.20 and 45,458.58 is: 68,165.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,656.78 : 119,446.20 = 45,458.58 : x
  2. Step 2: Convert to fraction form
    79,656.78/119,446.20 = 45,458.58/x
  3. Step 3: Cross multiply
    79,656.78x = 119,446.20 × 45,458.58
  4. Step 4: Simplify right side
    79,656.78x = 5,429,854,638.40
  5. Step 5: Solve for x
    x = 5,429,854,638.40/79,656.78
  6. Step 6: Final answer
    x = 68,165.63

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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.