Home / 86,972,787.75-120,019,388.94-47,814,279.39

Finding the Fourth Proportional to 86,972,787.75, 120,019,388.94 and 47,814,279.39

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Solution

The fourth proportional to 86,972,787.75, 120,019,388.94 and 47,814,279.39 is: 65,982,024.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,972,787.75 : 120,019,388.94 = 47,814,279.39 : x
  2. Step 2: Convert to fraction form
    86,972,787.75/120,019,388.94 = 47,814,279.39/x
  3. Step 3: Cross multiply
    86,972,787.75x = 120,019,388.94 × 47,814,279.39
  4. Step 4: Simplify right side
    86,972,787.75x = 5,738,640,594,994,236
  5. Step 5: Solve for x
    x = 5,738,640,594,994,236/86,972,787.75
  6. Step 6: Final answer
    x = 65,982,024.30

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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.