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Finding the Fourth Proportional to 28,501,711.20, 39,852,007.20 and 28,501,711.20

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Solution

The fourth proportional to 28,501,711.20, 39,852,007.20 and 28,501,711.20 is: 39,852,007.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,501,711.20 : 39,852,007.20 = 28,501,711.20 : x
  2. Step 2: Convert to fraction form
    28,501,711.20/39,852,007.20 = 28,501,711.20/x
  3. Step 3: Cross multiply
    28,501,711.20x = 39,852,007.20 × 28,501,711.20
  4. Step 4: Simplify right side
    28,501,711.20x = 1,135,850,399,954,720.75
  5. Step 5: Solve for x
    x = 1,135,850,399,954,720.75/28,501,711.20
  6. Step 6: Final answer
    x = 39,852,007.20

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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.