Home / 40,218.89-55,440.67-31,705.79

Finding the Fourth Proportional to 40,218.89, 55,440.67 and 31,705.79

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Solution

The fourth proportional to 40,218.89, 55,440.67 and 31,705.79 is: 43,705.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,218.89 : 55,440.67 = 31,705.79 : x
  2. Step 2: Convert to fraction form
    40,218.89/55,440.67 = 31,705.79/x
  3. Step 3: Cross multiply
    40,218.89x = 55,440.67 × 31,705.79
  4. Step 4: Simplify right side
    40,218.89x = 1,757,790,240.48
  5. Step 5: Solve for x
    x = 1,757,790,240.48/40,218.89
  6. Step 6: Final answer
    x = 43,705.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.