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Finding the Fourth Proportional to 81,683.40, 122,460.30 and 44,747.40

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Solution

The fourth proportional to 81,683.40, 122,460.30 and 44,747.40 is: 67,085.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,683.40 : 122,460.30 = 44,747.40 : x
  2. Step 2: Convert to fraction form
    81,683.40/122,460.30 = 44,747.40/x
  3. Step 3: Cross multiply
    81,683.40x = 122,460.30 × 44,747.40
  4. Step 4: Simplify right side
    81,683.40x = 5,479,780,028.22
  5. Step 5: Solve for x
    x = 5,479,780,028.22/81,683.40
  6. Step 6: Final answer
    x = 67,085.60

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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.