Home / 28,978,051.20-43,467,076.80-21,325,300.80

Finding the Fourth Proportional to 28,978,051.20, 43,467,076.80 and 21,325,300.80

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Solution

The fourth proportional to 28,978,051.20, 43,467,076.80 and 21,325,300.80 is: 31,987,951.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,978,051.20 : 43,467,076.80 = 21,325,300.80 : x
  2. Step 2: Convert to fraction form
    28,978,051.20/43,467,076.80 = 21,325,300.80/x
  3. Step 3: Cross multiply
    28,978,051.20x = 43,467,076.80 × 21,325,300.80
  4. Step 4: Simplify right side
    28,978,051.20x = 926,948,487,656,701.38
  5. Step 5: Solve for x
    x = 926,948,487,656,701.38/28,978,051.20
  6. Step 6: Final answer
    x = 31,987,951.20

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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.