Home / 40,628.20-60,942.30-20,945.20

Finding the Fourth Proportional to 40,628.20, 60,942.30 and 20,945.20

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Solution

The fourth proportional to 40,628.20, 60,942.30 and 20,945.20 is: 31,417.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,628.20 : 60,942.30 = 20,945.20 : x
  2. Step 2: Convert to fraction form
    40,628.20/60,942.30 = 20,945.20/x
  3. Step 3: Cross multiply
    40,628.20x = 60,942.30 × 20,945.20
  4. Step 4: Simplify right side
    40,628.20x = 1,276,448,661.96
  5. Step 5: Solve for x
    x = 1,276,448,661.96/40,628.20
  6. Step 6: Final answer
    x = 31,417.80

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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.