Home / 76,203.64-114,315.18-31,861

Finding the Fourth Proportional to 76,203.64, 114,315.18 and 31,861

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Solution

The fourth proportional to 76,203.64, 114,315.18 and 31,861 is: 47,795.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,203.64 : 114,315.18 = 31,861 : x
  2. Step 2: Convert to fraction form
    76,203.64/114,315.18 = 31,861/x
  3. Step 3: Cross multiply
    76,203.64x = 114,315.18 × 31,861
  4. Step 4: Simplify right side
    76,203.64x = 3,642,195,949.98
  5. Step 5: Solve for x
    x = 3,642,195,949.98/76,203.64
  6. Step 6: Final answer
    x = 47,795.56

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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.