Home / 81,941.10-122,911.65-29,331.60

Finding the Fourth Proportional to 81,941.10, 122,911.65 and 29,331.60

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Solution

The fourth proportional to 81,941.10, 122,911.65 and 29,331.60 is: 43,997.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,941.10 : 122,911.65 = 29,331.60 : x
  2. Step 2: Convert to fraction form
    81,941.10/122,911.65 = 29,331.60/x
  3. Step 3: Cross multiply
    81,941.10x = 122,911.65 × 29,331.60
  4. Step 4: Simplify right side
    81,941.10x = 3,605,195,353.14
  5. Step 5: Solve for x
    x = 3,605,195,353.14/81,941.10
  6. Step 6: Final answer
    x = 43,997.40

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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.