Home / 81,582.02-122,358.44-51,911.72

Finding the Fourth Proportional to 81,582.02, 122,358.44 and 51,911.72

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Solution

The fourth proportional to 81,582.02, 122,358.44 and 51,911.72 is: 77,858.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,582.02 : 122,358.44 = 51,911.72 : x
  2. Step 2: Convert to fraction form
    81,582.02/122,358.44 = 51,911.72/x
  3. Step 3: Cross multiply
    81,582.02x = 122,358.44 × 51,911.72
  4. Step 4: Simplify right side
    81,582.02x = 6,351,837,076.92
  5. Step 5: Solve for x
    x = 6,351,837,076.92/81,582.02
  6. Step 6: Final answer
    x = 77,858.30

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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.