Home / 79,181.18-109,239.62-45,191.56

Finding the Fourth Proportional to 79,181.18, 109,239.62 and 45,191.56

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Solution

The fourth proportional to 79,181.18, 109,239.62 and 45,191.56 is: 62,346.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,181.18 : 109,239.62 = 45,191.56 : x
  2. Step 2: Convert to fraction form
    79,181.18/109,239.62 = 45,191.56/x
  3. Step 3: Cross multiply
    79,181.18x = 109,239.62 × 45,191.56
  4. Step 4: Simplify right side
    79,181.18x = 4,936,708,069.45
  5. Step 5: Solve for x
    x = 4,936,708,069.45/79,181.18
  6. Step 6: Final answer
    x = 62,346.99

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.