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Finding the Fourth Proportional to 28,509,382.40, 42,764,073.60 and 28,084,229.60

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Solution

The fourth proportional to 28,509,382.40, 42,764,073.60 and 28,084,229.60 is: 42,126,344.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,509,382.40 : 42,764,073.60 = 28,084,229.60 : x
  2. Step 2: Convert to fraction form
    28,509,382.40/42,764,073.60 = 28,084,229.60/x
  3. Step 3: Cross multiply
    28,509,382.40x = 42,764,073.60 × 28,084,229.60
  4. Step 4: Simplify right side
    28,509,382.40x = 1,200,996,061,613,698.75
  5. Step 5: Solve for x
    x = 1,200,996,061,613,698.75/28,509,382.40
  6. Step 6: Final answer
    x = 42,126,344.40

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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.