Home / 81,394,742.20-122,092,113.30-30,266,181.40

Finding the Fourth Proportional to 81,394,742.20, 122,092,113.30 and 30,266,181.40

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Solution

The fourth proportional to 81,394,742.20, 122,092,113.30 and 30,266,181.40 is: 45,399,272.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,394,742.20 : 122,092,113.30 = 30,266,181.40 : x
  2. Step 2: Convert to fraction form
    81,394,742.20/122,092,113.30 = 30,266,181.40/x
  3. Step 3: Cross multiply
    81,394,742.20x = 122,092,113.30 × 30,266,181.40
  4. Step 4: Simplify right side
    81,394,742.20x = 3,695,262,048,647,152.50
  5. Step 5: Solve for x
    x = 3,695,262,048,647,152.50/81,394,742.20
  6. Step 6: Final answer
    x = 45,399,272.10

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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.