Home / 80,997.40-121,409.70-31,058.20

Finding the Fourth Proportional to 80,997.40, 121,409.70 and 31,058.20

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Solution

The fourth proportional to 80,997.40, 121,409.70 and 31,058.20 is: 46,554.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,997.40 : 121,409.70 = 31,058.20 : x
  2. Step 2: Convert to fraction form
    80,997.40/121,409.70 = 31,058.20/x
  3. Step 3: Cross multiply
    80,997.40x = 121,409.70 × 31,058.20
  4. Step 4: Simplify right side
    80,997.40x = 3,770,766,744.54
  5. Step 5: Solve for x
    x = 3,770,766,744.54/80,997.40
  6. Step 6: Final answer
    x = 46,554.17

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1.5x scale

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.