Home / 43,105.89-64,668.14-13,122.47

Finding the Fourth Proportional to 43,105.89, 64,668.14 and 13,122.47

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Solution

The fourth proportional to 43,105.89, 64,668.14 and 13,122.47 is: 19,686.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,105.89 : 64,668.14 = 13,122.47 : x
  2. Step 2: Convert to fraction form
    43,105.89/64,668.14 = 13,122.47/x
  3. Step 3: Cross multiply
    43,105.89x = 64,668.14 × 13,122.47
  4. Step 4: Simplify right side
    43,105.89x = 848,605,727.11
  5. Step 5: Solve for x
    x = 848,605,727.11/43,105.89
  6. Step 6: Final answer
    x = 19,686.54

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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.