Home / 78,410,909.76-108,191,198.88-45,809,563.20

Finding the Fourth Proportional to 78,410,909.76, 108,191,198.88 and 45,809,563.20

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Solution

The fourth proportional to 78,410,909.76, 108,191,198.88 and 45,809,563.20 is: 63,207,933.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,410,909.76 : 108,191,198.88 = 45,809,563.20 : x
  2. Step 2: Convert to fraction form
    78,410,909.76/108,191,198.88 = 45,809,563.20/x
  3. Step 3: Cross multiply
    78,410,909.76x = 108,191,198.88 × 45,809,563.20
  4. Step 4: Simplify right side
    78,410,909.76x = 4,956,191,562,777,129
  5. Step 5: Solve for x
    x = 4,956,191,562,777,129/78,410,909.76
  6. Step 6: Final answer
    x = 63,207,933.41

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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.