Home / 84,902.20-127,272.30-31,579.90

Finding the Fourth Proportional to 84,902.20, 127,272.30 and 31,579.90

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Solution

The fourth proportional to 84,902.20, 127,272.30 and 31,579.90 is: 47,339.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,902.20 : 127,272.30 = 31,579.90 : x
  2. Step 2: Convert to fraction form
    84,902.20/127,272.30 = 31,579.90/x
  3. Step 3: Cross multiply
    84,902.20x = 127,272.30 × 31,579.90
  4. Step 4: Simplify right side
    84,902.20x = 4,019,246,506.77
  5. Step 5: Solve for x
    x = 4,019,246,506.77/84,902.20
  6. Step 6: Final answer
    x = 47,339.72

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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.