Home / 43,168.92-64,736.34-20,975.72

Finding the Fourth Proportional to 43,168.92, 64,736.34 and 20,975.72

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Solution

The fourth proportional to 43,168.92, 64,736.34 and 20,975.72 is: 31,455.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,168.92 : 64,736.34 = 20,975.72 : x
  2. Step 2: Convert to fraction form
    43,168.92/64,736.34 = 20,975.72/x
  3. Step 3: Cross multiply
    43,168.92x = 64,736.34 × 20,975.72
  4. Step 4: Simplify right side
    43,168.92x = 1,357,891,341.66
  5. Step 5: Solve for x
    x = 1,357,891,341.66/43,168.92
  6. Step 6: Final answer
    x = 31,455.30

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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.