Home / 80,507,422.36-120,746,756.80-21,420,142.37

Finding the Fourth Proportional to 80,507,422.36, 120,746,756.80 and 21,420,142.37

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Solution

The fourth proportional to 80,507,422.36, 120,746,756.80 and 21,420,142.37 is: 32,126,388.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,507,422.36 : 120,746,756.80 = 21,420,142.37 : x
  2. Step 2: Convert to fraction form
    80,507,422.36/120,746,756.80 = 21,420,142.37/x
  3. Step 3: Cross multiply
    80,507,422.36x = 120,746,756.80 × 21,420,142.37
  4. Step 4: Simplify right side
    80,507,422.36x = 2,586,412,721,247,607
  5. Step 5: Solve for x
    x = 2,586,412,721,247,607/80,507,422.36
  6. Step 6: Final answer
    x = 32,126,388.42

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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.