Home / 42,646,540.20-63,969,810.30-21,084,469.80

Finding the Fourth Proportional to 42,646,540.20, 63,969,810.30 and 21,084,469.80

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Solution

The fourth proportional to 42,646,540.20, 63,969,810.30 and 21,084,469.80 is: 31,626,704.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,646,540.20 : 63,969,810.30 = 21,084,469.80 : x
  2. Step 2: Convert to fraction form
    42,646,540.20/63,969,810.30 = 21,084,469.80/x
  3. Step 3: Cross multiply
    42,646,540.20x = 63,969,810.30 × 21,084,469.80
  4. Step 4: Simplify right side
    42,646,540.20x = 1,348,769,533,382,079
  5. Step 5: Solve for x
    x = 1,348,769,533,382,079/42,646,540.20
  6. Step 6: Final answer
    x = 31,626,704.70

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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.