Home / 81,399,200.40-121,846,858.20-47,219,014.80

Finding the Fourth Proportional to 81,399,200.40, 121,846,858.20 and 47,219,014.80

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Solution

The fourth proportional to 81,399,200.40, 121,846,858.20 and 47,219,014.80 is: 70,682,372.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,399,200.40 : 121,846,858.20 = 47,219,014.80 : x
  2. Step 2: Convert to fraction form
    81,399,200.40/121,846,858.20 = 47,219,014.80/x
  3. Step 3: Cross multiply
    81,399,200.40x = 121,846,858.20 × 47,219,014.80
  4. Step 4: Simplify right side
    81,399,200.40x = 5,753,488,600,679,301
  5. Step 5: Solve for x
    x = 5,753,488,600,679,301/81,399,200.40
  6. Step 6: Final answer
    x = 70,682,372.46

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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.