Home / 42,775,847.20-64,147,965.36-18,518,321.44

Finding the Fourth Proportional to 42,775,847.20, 64,147,965.36 and 18,518,321.44

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Solution

The fourth proportional to 42,775,847.20, 64,147,965.36 and 18,518,321.44 is: 27,770,639.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,775,847.20 : 64,147,965.36 = 18,518,321.44 : x
  2. Step 2: Convert to fraction form
    42,775,847.20/64,147,965.36 = 18,518,321.44/x
  3. Step 3: Cross multiply
    42,775,847.20x = 64,147,965.36 × 18,518,321.44
  4. Step 4: Simplify right side
    42,775,847.20x = 1,187,912,642,258,465.50
  5. Step 5: Solve for x
    x = 1,187,912,642,258,465.50/42,775,847.20
  6. Step 6: Final answer
    x = 27,770,639.74

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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.