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Finding the Fourth Proportional to 28,187,467.40, 39,542,080.60 and 28,187,467.40

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Solution

The fourth proportional to 28,187,467.40, 39,542,080.60 and 28,187,467.40 is: 39,542,080.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,187,467.40 : 39,542,080.60 = 28,187,467.40 : x
  2. Step 2: Convert to fraction form
    28,187,467.40/39,542,080.60 = 28,187,467.40/x
  3. Step 3: Cross multiply
    28,187,467.40x = 39,542,080.60 × 28,187,467.40
  4. Step 4: Simplify right side
    28,187,467.40x = 1,114,591,107,840,672.38
  5. Step 5: Solve for x
    x = 1,114,591,107,840,672.38/28,187,467.40
  6. Step 6: Final answer
    x = 39,542,080.60

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.