Home / 40,391.68-55,622.90-31,424.08

Finding the Fourth Proportional to 40,391.68, 55,622.90 and 31,424.08

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Solution

The fourth proportional to 40,391.68, 55,622.90 and 31,424.08 is: 43,273.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,391.68 : 55,622.90 = 31,424.08 : x
  2. Step 2: Convert to fraction form
    40,391.68/55,622.90 = 31,424.08/x
  3. Step 3: Cross multiply
    40,391.68x = 55,622.90 × 31,424.08
  4. Step 4: Simplify right side
    40,391.68x = 1,747,898,459.43
  5. Step 5: Solve for x
    x = 1,747,898,459.43/40,391.68
  6. Step 6: Final answer
    x = 43,273.73

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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.