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Finding the Fourth Proportional to 66,480.68, 99,764.30 and 35,337.80

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Solution

The fourth proportional to 66,480.68, 99,764.30 and 35,337.80 is: 53,029.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,480.68 : 99,764.30 = 35,337.80 : x
  2. Step 2: Convert to fraction form
    66,480.68/99,764.30 = 35,337.80/x
  3. Step 3: Cross multiply
    66,480.68x = 99,764.30 × 35,337.80
  4. Step 4: Simplify right side
    66,480.68x = 3,525,450,880.54
  5. Step 5: Solve for x
    x = 3,525,450,880.54/66,480.68
  6. Step 6: Final answer
    x = 53,029.71

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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.