Home / 81,335.90-122,004.06-53,279.48

Finding the Fourth Proportional to 81,335.90, 122,004.06 and 53,279.48

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Solution

The fourth proportional to 81,335.90, 122,004.06 and 53,279.48 is: 79,919.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,335.90 : 122,004.06 = 53,279.48 : x
  2. Step 2: Convert to fraction form
    81,335.90/122,004.06 = 53,279.48/x
  3. Step 3: Cross multiply
    81,335.90x = 122,004.06 × 53,279.48
  4. Step 4: Simplify right side
    81,335.90x = 6,500,312,874.69
  5. Step 5: Solve for x
    x = 6,500,312,874.69/81,335.90
  6. Step 6: Final answer
    x = 79,919.36

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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.