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Finding the Fourth Proportional to 40,479.68, 55,859.31 and 22,329.31

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Solution

The fourth proportional to 40,479.68, 55,859.31 and 22,329.31 is: 30,812.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,479.68 : 55,859.31 = 22,329.31 : x
  2. Step 2: Convert to fraction form
    40,479.68/55,859.31 = 22,329.31/x
  3. Step 3: Cross multiply
    40,479.68x = 55,859.31 × 22,329.31
  4. Step 4: Simplify right side
    40,479.68x = 1,247,299,849.38
  5. Step 5: Solve for x
    x = 1,247,299,849.38/40,479.68
  6. Step 6: Final answer
    x = 30,812.99

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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.