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Finding the Fourth Proportional to 28,341,976.80, 39,792,141.60 and 28,341,976.80

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Solution

The fourth proportional to 28,341,976.80, 39,792,141.60 and 28,341,976.80 is: 39,792,141.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,341,976.80 : 39,792,141.60 = 28,341,976.80 : x
  2. Step 2: Convert to fraction form
    28,341,976.80/39,792,141.60 = 28,341,976.80/x
  3. Step 3: Cross multiply
    28,341,976.80x = 39,792,141.60 × 28,341,976.80
  4. Step 4: Simplify right side
    28,341,976.80x = 1,127,787,954,049,515
  5. Step 5: Solve for x
    x = 1,127,787,954,049,515/28,341,976.80
  6. Step 6: Final answer
    x = 39,792,141.60

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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.