Home / 71,081.32-106,622.11-18,490.72

Finding the Fourth Proportional to 71,081.32, 106,622.11 and 18,490.72

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Solution

The fourth proportional to 71,081.32, 106,622.11 and 18,490.72 is: 27,736.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,081.32 : 106,622.11 = 18,490.72 : x
  2. Step 2: Convert to fraction form
    71,081.32/106,622.11 = 18,490.72/x
  3. Step 3: Cross multiply
    71,081.32x = 106,622.11 × 18,490.72
  4. Step 4: Simplify right side
    71,081.32x = 1,971,519,048.71
  5. Step 5: Solve for x
    x = 1,971,519,048.71/71,081.32
  6. Step 6: Final answer
    x = 27,736.11

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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.