Home / 40,005.80-55,207.20-22,100.65

Finding the Fourth Proportional to 40,005.80, 55,207.20 and 22,100.65

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Solution

The fourth proportional to 40,005.80, 55,207.20 and 22,100.65 is: 30,498.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,005.80 : 55,207.20 = 22,100.65 : x
  2. Step 2: Convert to fraction form
    40,005.80/55,207.20 = 22,100.65/x
  3. Step 3: Cross multiply
    40,005.80x = 55,207.20 × 22,100.65
  4. Step 4: Simplify right side
    40,005.80x = 1,220,114,949.54
  5. Step 5: Solve for x
    x = 1,220,114,949.54/40,005.80
  6. Step 6: Final answer
    x = 30,498.45

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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.