Home / 85,336.19-127,908.90-31,976.84

Finding the Fourth Proportional to 85,336.19, 127,908.90 and 31,976.84

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Solution

The fourth proportional to 85,336.19, 127,908.90 and 31,976.84 is: 47,929.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,336.19 : 127,908.90 = 31,976.84 : x
  2. Step 2: Convert to fraction form
    85,336.19/127,908.90 = 31,976.84/x
  3. Step 3: Cross multiply
    85,336.19x = 127,908.90 × 31,976.84
  4. Step 4: Simplify right side
    85,336.19x = 4,090,122,429.88
  5. Step 5: Solve for x
    x = 4,090,122,429.88/85,336.19
  6. Step 6: Final answer
    x = 47,929.52

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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.