Home / 42,891.30-64,349.96-20,700.54

Finding the Fourth Proportional to 42,891.30, 64,349.96 and 20,700.54

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Solution

The fourth proportional to 42,891.30, 64,349.96 and 20,700.54 is: 31,057.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,891.30 : 64,349.96 = 20,700.54 : x
  2. Step 2: Convert to fraction form
    42,891.30/64,349.96 = 20,700.54/x
  3. Step 3: Cross multiply
    42,891.30x = 64,349.96 × 20,700.54
  4. Step 4: Simplify right side
    42,891.30x = 1,332,078,920.98
  5. Step 5: Solve for x
    x = 1,332,078,920.98/42,891.30
  6. Step 6: Final answer
    x = 31,057.09

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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.