Home / 71,112.24-106,668.32-18,521.60

Finding the Fourth Proportional to 71,112.24, 106,668.32 and 18,521.60

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Solution

The fourth proportional to 71,112.24, 106,668.32 and 18,521.60 is: 27,782.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,112.24 : 106,668.32 = 18,521.60 : x
  2. Step 2: Convert to fraction form
    71,112.24/106,668.32 = 18,521.60/x
  3. Step 3: Cross multiply
    71,112.24x = 106,668.32 × 18,521.60
  4. Step 4: Simplify right side
    71,112.24x = 1,975,667,955.71
  5. Step 5: Solve for x
    x = 1,975,667,955.71/71,112.24
  6. Step 6: Final answer
    x = 27,782.39

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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.