Home / 79,231.18-109,342.02-45,245.20

Finding the Fourth Proportional to 79,231.18, 109,342.02 and 45,245.20

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Solution

The fourth proportional to 79,231.18, 109,342.02 and 45,245.20 is: 62,440.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,231.18 : 109,342.02 = 45,245.20 : x
  2. Step 2: Convert to fraction form
    79,231.18/109,342.02 = 45,245.20/x
  3. Step 3: Cross multiply
    79,231.18x = 109,342.02 × 45,245.20
  4. Step 4: Simplify right side
    79,231.18x = 4,947,201,563.30
  5. Step 5: Solve for x
    x = 4,947,201,563.30/79,231.18
  6. Step 6: Final answer
    x = 62,440.08

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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.