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Finding the Fourth Proportional to 36,478.71, 50,340.66 and 19,711.71

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Solution

The fourth proportional to 36,478.71, 50,340.66 and 19,711.71 is: 27,202.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,478.71 : 50,340.66 = 19,711.71 : x
  2. Step 2: Convert to fraction form
    36,478.71/50,340.66 = 19,711.71/x
  3. Step 3: Cross multiply
    36,478.71x = 50,340.66 × 19,711.71
  4. Step 4: Simplify right side
    36,478.71x = 992,300,491.13
  5. Step 5: Solve for x
    x = 992,300,491.13/36,478.71
  6. Step 6: Final answer
    x = 27,202.18

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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.