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Finding the Fourth Proportional to 66,732.80, 100,214.40 and 35,628.80

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Solution

The fourth proportional to 66,732.80, 100,214.40 and 35,628.80 is: 53,504.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,732.80 : 100,214.40 = 35,628.80 : x
  2. Step 2: Convert to fraction form
    66,732.80/100,214.40 = 35,628.80/x
  3. Step 3: Cross multiply
    66,732.80x = 100,214.40 × 35,628.80
  4. Step 4: Simplify right side
    66,732.80x = 3,570,518,814.72
  5. Step 5: Solve for x
    x = 3,570,518,814.72/66,732.80
  6. Step 6: Final answer
    x = 53,504.71

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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.