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Finding the Fourth Proportional to 67,020.40, 100,530.60 and 40,733.20

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Solution

The fourth proportional to 67,020.40, 100,530.60 and 40,733.20 is: 61,099.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,020.40 : 100,530.60 = 40,733.20 : x
  2. Step 2: Convert to fraction form
    67,020.40/100,530.60 = 40,733.20/x
  3. Step 3: Cross multiply
    67,020.40x = 100,530.60 × 40,733.20
  4. Step 4: Simplify right side
    67,020.40x = 4,094,933,035.92
  5. Step 5: Solve for x
    x = 4,094,933,035.92/67,020.40
  6. Step 6: Final answer
    x = 61,099.80

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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.