Home / 71,147.32-106,722.90-18,555.64

Finding the Fourth Proportional to 71,147.32, 106,722.90 and 18,555.64

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Solution

The fourth proportional to 71,147.32, 106,722.90 and 18,555.64 is: 27,833.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,147.32 : 106,722.90 = 18,555.64 : x
  2. Step 2: Convert to fraction form
    71,147.32/106,722.90 = 18,555.64/x
  3. Step 3: Cross multiply
    71,147.32x = 106,722.90 × 18,555.64
  4. Step 4: Simplify right side
    71,147.32x = 1,980,311,712.16
  5. Step 5: Solve for x
    x = 1,980,311,712.16/71,147.32
  6. Step 6: Final answer
    x = 27,833.96

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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.