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Finding the Fourth Proportional to 74,246.90, 111,321.15 and 40,982.90

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Solution

The fourth proportional to 74,246.90, 111,321.15 and 40,982.90 is: 61,447.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,246.90 : 111,321.15 = 40,982.90 : x
  2. Step 2: Convert to fraction form
    74,246.90/111,321.15 = 40,982.90/x
  3. Step 3: Cross multiply
    74,246.90x = 111,321.15 × 40,982.90
  4. Step 4: Simplify right side
    74,246.90x = 4,562,263,558.34
  5. Step 5: Solve for x
    x = 4,562,263,558.34/74,246.90
  6. Step 6: Final answer
    x = 61,447.19

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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.