Home / 84,816.20-127,143.30-31,493.90

Finding the Fourth Proportional to 84,816.20, 127,143.30 and 31,493.90

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Solution

The fourth proportional to 84,816.20, 127,143.30 and 31,493.90 is: 47,210.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,816.20 : 127,143.30 = 31,493.90 : x
  2. Step 2: Convert to fraction form
    84,816.20/127,143.30 = 31,493.90/x
  3. Step 3: Cross multiply
    84,816.20x = 127,143.30 × 31,493.90
  4. Step 4: Simplify right side
    84,816.20x = 4,004,238,375.87
  5. Step 5: Solve for x
    x = 4,004,238,375.87/84,816.20
  6. Step 6: Final answer
    x = 47,210.77

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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.