Home / 72,943,260.80-109,414,891.20-30,387,459.20

Finding the Fourth Proportional to 72,943,260.80, 109,414,891.20 and 30,387,459.20

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Solution

The fourth proportional to 72,943,260.80, 109,414,891.20 and 30,387,459.20 is: 45,581,188.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,943,260.80 : 109,414,891.20 = 30,387,459.20 : x
  2. Step 2: Convert to fraction form
    72,943,260.80/109,414,891.20 = 30,387,459.20/x
  3. Step 3: Cross multiply
    72,943,260.80x = 109,414,891.20 × 30,387,459.20
  4. Step 4: Simplify right side
    72,943,260.80x = 3,324,840,542,212,439
  5. Step 5: Solve for x
    x = 3,324,840,542,212,439/72,943,260.80
  6. Step 6: Final answer
    x = 45,581,188.80

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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.