Home / 77,323,198.72-115,982,712.96-19,031,396.32

Finding the Fourth Proportional to 77,323,198.72, 115,982,712.96 and 19,031,396.32

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Solution

The fourth proportional to 77,323,198.72, 115,982,712.96 and 19,031,396.32 is: 28,546,581.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,323,198.72 : 115,982,712.96 = 19,031,396.32 : x
  2. Step 2: Convert to fraction form
    77,323,198.72/115,982,712.96 = 19,031,396.32/x
  3. Step 3: Cross multiply
    77,323,198.72x = 115,982,712.96 × 19,031,396.32
  4. Step 4: Simplify right side
    77,323,198.72x = 2,207,312,976,610,560.25
  5. Step 5: Solve for x
    x = 2,207,312,976,610,560.25/77,323,198.72
  6. Step 6: Final answer
    x = 28,546,581.27

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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.