Home / 79,561.57-119,333.44-20,398.63

Finding the Fourth Proportional to 79,561.57, 119,333.44 and 20,398.63

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Solution

The fourth proportional to 79,561.57, 119,333.44 and 20,398.63 is: 30,595.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,561.57 : 119,333.44 = 20,398.63 : x
  2. Step 2: Convert to fraction form
    79,561.57/119,333.44 = 20,398.63/x
  3. Step 3: Cross multiply
    79,561.57x = 119,333.44 × 20,398.63
  4. Step 4: Simplify right side
    79,561.57x = 2,434,238,689.19
  5. Step 5: Solve for x
    x = 2,434,238,689.19/79,561.57
  6. Step 6: Final answer
    x = 30,595.66

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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.