Home / 79,346.49-119,019.21-20,181.66

Finding the Fourth Proportional to 79,346.49, 119,019.21 and 20,181.66

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Solution

The fourth proportional to 79,346.49, 119,019.21 and 20,181.66 is: 30,272.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,346.49 : 119,019.21 = 20,181.66 : x
  2. Step 2: Convert to fraction form
    79,346.49/119,019.21 = 20,181.66/x
  3. Step 3: Cross multiply
    79,346.49x = 119,019.21 × 20,181.66
  4. Step 4: Simplify right side
    79,346.49x = 2,402,004,707.69
  5. Step 5: Solve for x
    x = 2,402,004,707.69/79,346.49
  6. Step 6: Final answer
    x = 30,272.35

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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.