Home / 47,912,080.80-71,868,121.20-19,143,991.20

Finding the Fourth Proportional to 47,912,080.80, 71,868,121.20 and 19,143,991.20

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Solution

The fourth proportional to 47,912,080.80, 71,868,121.20 and 19,143,991.20 is: 28,715,986.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,912,080.80 : 71,868,121.20 = 19,143,991.20 : x
  2. Step 2: Convert to fraction form
    47,912,080.80/71,868,121.20 = 19,143,991.20/x
  3. Step 3: Cross multiply
    47,912,080.80x = 71,868,121.20 × 19,143,991.20
  4. Step 4: Simplify right side
    47,912,080.80x = 1,375,842,679,813,333.50
  5. Step 5: Solve for x
    x = 1,375,842,679,813,333.50/47,912,080.80
  6. Step 6: Final answer
    x = 28,715,986.80

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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.