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Finding the Fourth Proportional to 71,794.71, 107,684.46 and 19,209.51

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Solution

The fourth proportional to 71,794.71, 107,684.46 and 19,209.51 is: 28,812.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,794.71 : 107,684.46 = 19,209.51 : x
  2. Step 2: Convert to fraction form
    71,794.71/107,684.46 = 19,209.51/x
  3. Step 3: Cross multiply
    71,794.71x = 107,684.46 × 19,209.51
  4. Step 4: Simplify right side
    71,794.71x = 2,068,565,711.21
  5. Step 5: Solve for x
    x = 2,068,565,711.21/71,794.71
  6. Step 6: Final answer
    x = 28,812.23

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1.5x scale

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.