Home / 81,682.02-122,446.49-31,794.12

Finding the Fourth Proportional to 81,682.02, 122,446.49 and 31,794.12

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Solution

The fourth proportional to 81,682.02, 122,446.49 and 31,794.12 is: 47,661.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,682.02 : 122,446.49 = 31,794.12 : x
  2. Step 2: Convert to fraction form
    81,682.02/122,446.49 = 31,794.12/x
  3. Step 3: Cross multiply
    81,682.02x = 122,446.49 × 31,794.12
  4. Step 4: Simplify right side
    81,682.02x = 3,893,078,237.67
  5. Step 5: Solve for x
    x = 3,893,078,237.67/81,682.02
  6. Step 6: Final answer
    x = 47,661.39

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1.5x scale

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.