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Finding the Fourth Proportional to 73,760.40, 110,640.60 and 50,140.80

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Solution

The fourth proportional to 73,760.40, 110,640.60 and 50,140.80 is: 75,211.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,760.40 : 110,640.60 = 50,140.80 : x
  2. Step 2: Convert to fraction form
    73,760.40/110,640.60 = 50,140.80/x
  3. Step 3: Cross multiply
    73,760.40x = 110,640.60 × 50,140.80
  4. Step 4: Simplify right side
    73,760.40x = 5,547,608,196.48
  5. Step 5: Solve for x
    x = 5,547,608,196.48/73,760.40
  6. Step 6: Final answer
    x = 75,211.20

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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.