Home / 71,107.23-106,678.38-21,187.13

Finding the Fourth Proportional to 71,107.23, 106,678.38 and 21,187.13

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Solution

The fourth proportional to 71,107.23, 106,678.38 and 21,187.13 is: 31,785.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,107.23 : 106,678.38 = 21,187.13 : x
  2. Step 2: Convert to fraction form
    71,107.23/106,678.38 = 21,187.13/x
  3. Step 3: Cross multiply
    71,107.23x = 106,678.38 × 21,187.13
  4. Step 4: Simplify right side
    71,107.23x = 2,260,208,171.86
  5. Step 5: Solve for x
    x = 2,260,208,171.86/71,107.23
  6. Step 6: Final answer
    x = 31,785.91

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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.