Home / 71,840,459.20-107,760,688.80-20,724,145.60

Finding the Fourth Proportional to 71,840,459.20, 107,760,688.80 and 20,724,145.60

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Solution

The fourth proportional to 71,840,459.20, 107,760,688.80 and 20,724,145.60 is: 31,086,218.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,840,459.20 : 107,760,688.80 = 20,724,145.60 : x
  2. Step 2: Convert to fraction form
    71,840,459.20/107,760,688.80 = 20,724,145.60/x
  3. Step 3: Cross multiply
    71,840,459.20x = 107,760,688.80 × 20,724,145.60
  4. Step 4: Simplify right side
    71,840,459.20x = 2,233,248,204,647,489.50
  5. Step 5: Solve for x
    x = 2,233,248,204,647,489.50/71,840,459.20
  6. Step 6: Final answer
    x = 31,086,218.40

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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.