Home / 83,905.90-125,908.16-31,319.48

Finding the Fourth Proportional to 83,905.90, 125,908.16 and 31,319.48

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Solution

The fourth proportional to 83,905.90, 125,908.16 and 31,319.48 is: 46,997.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,905.90 : 125,908.16 = 31,319.48 : x
  2. Step 2: Convert to fraction form
    83,905.90/125,908.16 = 31,319.48/x
  3. Step 3: Cross multiply
    83,905.90x = 125,908.16 × 31,319.48
  4. Step 4: Simplify right side
    83,905.90x = 3,943,378,257.13
  5. Step 5: Solve for x
    x = 3,943,378,257.13/83,905.90
  6. Step 6: Final answer
    x = 46,997.63

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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.