Home / 71,048.03-106,588.71-21,128.54

Finding the Fourth Proportional to 71,048.03, 106,588.71 and 21,128.54

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Solution

The fourth proportional to 71,048.03, 106,588.71 and 21,128.54 is: 31,697.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,048.03 : 106,588.71 = 21,128.54 : x
  2. Step 2: Convert to fraction form
    71,048.03/106,588.71 = 21,128.54/x
  3. Step 3: Cross multiply
    71,048.03x = 106,588.71 × 21,128.54
  4. Step 4: Simplify right side
    71,048.03x = 2,252,063,289.84
  5. Step 5: Solve for x
    x = 2,252,063,289.84/71,048.03
  6. Step 6: Final answer
    x = 31,697.76

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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.