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Finding the Fourth Proportional to 73,651.20, 101,639.36 and 41,820.80

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Solution

The fourth proportional to 73,651.20, 101,639.36 and 41,820.80 is: 57,713.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,651.20 : 101,639.36 = 41,820.80 : x
  2. Step 2: Convert to fraction form
    73,651.20/101,639.36 = 41,820.80/x
  3. Step 3: Cross multiply
    73,651.20x = 101,639.36 × 41,820.80
  4. Step 4: Simplify right side
    73,651.20x = 4,250,639,346.69
  5. Step 5: Solve for x
    x = 4,250,639,346.69/73,651.20
  6. Step 6: Final answer
    x = 57,713.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.