Home / 79,770.42-119,690.19-42,791.22

Finding the Fourth Proportional to 79,770.42, 119,690.19 and 42,791.22

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Solution

The fourth proportional to 79,770.42, 119,690.19 and 42,791.22 is: 64,205.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,770.42 : 119,690.19 = 42,791.22 : x
  2. Step 2: Convert to fraction form
    79,770.42/119,690.19 = 42,791.22/x
  3. Step 3: Cross multiply
    79,770.42x = 119,690.19 × 42,791.22
  4. Step 4: Simplify right side
    79,770.42x = 5,121,689,252.13
  5. Step 5: Solve for x
    x = 5,121,689,252.13/79,770.42
  6. Step 6: Final answer
    x = 64,205.37

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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.