Home / 79,436.22-119,154.26-20,271.90

Finding the Fourth Proportional to 79,436.22, 119,154.26 and 20,271.90

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Solution

The fourth proportional to 79,436.22, 119,154.26 and 20,271.90 is: 30,407.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,436.22 : 119,154.26 = 20,271.90 : x
  2. Step 2: Convert to fraction form
    79,436.22/119,154.26 = 20,271.90/x
  3. Step 3: Cross multiply
    79,436.22x = 119,154.26 × 20,271.90
  4. Step 4: Simplify right side
    79,436.22x = 2,415,483,141.93
  5. Step 5: Solve for x
    x = 2,415,483,141.93/79,436.22
  6. Step 6: Final answer
    x = 30,407.83

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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.