Home / 81,624.02-122,412.79-31,693.44

Finding the Fourth Proportional to 81,624.02, 122,412.79 and 31,693.44

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Solution

The fourth proportional to 81,624.02, 122,412.79 and 31,693.44 is: 47,531.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,624.02 : 122,412.79 = 31,693.44 : x
  2. Step 2: Convert to fraction form
    81,624.02/122,412.79 = 31,693.44/x
  3. Step 3: Cross multiply
    81,624.02x = 122,412.79 × 31,693.44
  4. Step 4: Simplify right side
    81,624.02x = 3,879,682,735.49
  5. Step 5: Solve for x
    x = 3,879,682,735.49/81,624.02
  6. Step 6: Final answer
    x = 47,531.14

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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.