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Finding the Fourth Proportional to 71,210.80, 106,806.93 and 18,624.34

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Solution

The fourth proportional to 71,210.80, 106,806.93 and 18,624.34 is: 27,934.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,210.80 : 106,806.93 = 18,624.34 : x
  2. Step 2: Convert to fraction form
    71,210.80/106,806.93 = 18,624.34/x
  3. Step 3: Cross multiply
    71,210.80x = 106,806.93 × 18,624.34
  4. Step 4: Simplify right side
    71,210.80x = 1,989,208,578.68
  5. Step 5: Solve for x
    x = 1,989,208,578.68/71,210.80
  6. Step 6: Final answer
    x = 27,934.09

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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.