Home / 78,166,451.82-117,250,675.56-20,658,226.14

Finding the Fourth Proportional to 78,166,451.82, 117,250,675.56 and 20,658,226.14

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Solution

The fourth proportional to 78,166,451.82, 117,250,675.56 and 20,658,226.14 is: 30,987,602.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,166,451.82 : 117,250,675.56 = 20,658,226.14 : x
  2. Step 2: Convert to fraction form
    78,166,451.82/117,250,675.56 = 20,658,226.14/x
  3. Step 3: Cross multiply
    78,166,451.82x = 117,250,675.56 × 20,658,226.14
  4. Step 4: Simplify right side
    78,166,451.82x = 2,422,190,970,786,251.50
  5. Step 5: Solve for x
    x = 2,422,190,970,786,251.50/78,166,451.82
  6. Step 6: Final answer
    x = 30,987,602.92

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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.