Home / 76,039.70-113,979.36-31,621.74

Finding the Fourth Proportional to 76,039.70, 113,979.36 and 31,621.74

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Solution

The fourth proportional to 76,039.70, 113,979.36 and 31,621.74 is: 47,399.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,039.70 : 113,979.36 = 31,621.74 : x
  2. Step 2: Convert to fraction form
    76,039.70/113,979.36 = 31,621.74/x
  3. Step 3: Cross multiply
    76,039.70x = 113,979.36 × 31,621.74
  4. Step 4: Simplify right side
    76,039.70x = 3,604,225,687.29
  5. Step 5: Solve for x
    x = 3,604,225,687.29/76,039.70
  6. Step 6: Final answer
    x = 47,399.26

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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.