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Finding the Fourth Proportional to 40,478.68, 55,857.94 and 22,328.31

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Solution

The fourth proportional to 40,478.68, 55,857.94 and 22,328.31 is: 30,811.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,478.68 : 55,857.94 = 22,328.31 : x
  2. Step 2: Convert to fraction form
    40,478.68/55,857.94 = 22,328.31/x
  3. Step 3: Cross multiply
    40,478.68x = 55,857.94 × 22,328.31
  4. Step 4: Simplify right side
    40,478.68x = 1,247,213,009.35
  5. Step 5: Solve for x
    x = 1,247,213,009.35/40,478.68
  6. Step 6: Final answer
    x = 30,811.61

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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.