Home / 75,957.12-113,939.46-31,579.20

Finding the Fourth Proportional to 75,957.12, 113,939.46 and 31,579.20

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Solution

The fourth proportional to 75,957.12, 113,939.46 and 31,579.20 is: 47,370.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,957.12 : 113,939.46 = 31,579.20 : x
  2. Step 2: Convert to fraction form
    75,957.12/113,939.46 = 31,579.20/x
  3. Step 3: Cross multiply
    75,957.12x = 113,939.46 × 31,579.20
  4. Step 4: Simplify right side
    75,957.12x = 3,598,116,995.23
  5. Step 5: Solve for x
    x = 3,598,116,995.23/75,957.12
  6. Step 6: Final answer
    x = 47,370.37

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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.