Home / 31,100,858.12-42,927,720.78-18,052,320.86

Finding the Fourth Proportional to 31,100,858.12, 42,927,720.78 and 18,052,320.86

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Solution

The fourth proportional to 31,100,858.12, 42,927,720.78 and 18,052,320.86 is: 24,917,157.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,100,858.12 : 42,927,720.78 = 18,052,320.86 : x
  2. Step 2: Convert to fraction form
    31,100,858.12/42,927,720.78 = 18,052,320.86/x
  3. Step 3: Cross multiply
    31,100,858.12x = 42,927,720.78 × 18,052,320.86
  4. Step 4: Simplify right side
    31,100,858.12x = 774,944,989,309,049.50
  5. Step 5: Solve for x
    x = 774,944,989,309,049.50/31,100,858.12
  6. Step 6: Final answer
    x = 24,917,157.79

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.