Home / 40,331.21-60,509.12-20,623.61

Finding the Fourth Proportional to 40,331.21, 60,509.12 and 20,623.61

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Solution

The fourth proportional to 40,331.21, 60,509.12 and 20,623.61 is: 30,941.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,331.21 : 60,509.12 = 20,623.61 : x
  2. Step 2: Convert to fraction form
    40,331.21/60,509.12 = 20,623.61/x
  3. Step 3: Cross multiply
    40,331.21x = 60,509.12 × 20,623.61
  4. Step 4: Simplify right side
    40,331.21x = 1,247,916,086.66
  5. Step 5: Solve for x
    x = 1,247,916,086.66/40,331.21
  6. Step 6: Final answer
    x = 30,941.70

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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.