Home / 40,420.20-55,780.85-22,515.49

Finding the Fourth Proportional to 40,420.20, 55,780.85 and 22,515.49

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Solution

The fourth proportional to 40,420.20, 55,780.85 and 22,515.49 is: 31,071.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,420.20 : 55,780.85 = 22,515.49 : x
  2. Step 2: Convert to fraction form
    40,420.20/55,780.85 = 22,515.49/x
  3. Step 3: Cross multiply
    40,420.20x = 55,780.85 × 22,515.49
  4. Step 4: Simplify right side
    40,420.20x = 1,255,933,170.37
  5. Step 5: Solve for x
    x = 1,255,933,170.37/40,420.20
  6. Step 6: Final answer
    x = 31,071.92

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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.