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Finding the Fourth Proportional to 49,081.80, 73,622.70 and 43,638.60

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Solution

The fourth proportional to 49,081.80, 73,622.70 and 43,638.60 is: 65,457.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,081.80 : 73,622.70 = 43,638.60 : x
  2. Step 2: Convert to fraction form
    49,081.80/73,622.70 = 43,638.60/x
  3. Step 3: Cross multiply
    49,081.80x = 73,622.70 × 43,638.60
  4. Step 4: Simplify right side
    49,081.80x = 3,212,791,556.22
  5. Step 5: Solve for x
    x = 3,212,791,556.22/49,081.80
  6. Step 6: Final answer
    x = 65,457.90

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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.