Home / 72,661,076.78-100,271,555.79-39,621,244.82

Finding the Fourth Proportional to 72,661,076.78, 100,271,555.79 and 39,621,244.82

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Solution

The fourth proportional to 72,661,076.78, 100,271,555.79 and 39,621,244.82 is: 54,676,919.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,661,076.78 : 100,271,555.79 = 39,621,244.82 : x
  2. Step 2: Convert to fraction form
    72,661,076.78/100,271,555.79 = 39,621,244.82/x
  3. Step 3: Cross multiply
    72,661,076.78x = 100,271,555.79 × 39,621,244.82
  4. Step 4: Simplify right side
    72,661,076.78x = 3,972,883,860,437,879
  5. Step 5: Solve for x
    x = 3,972,883,860,437,879/72,661,076.78
  6. Step 6: Final answer
    x = 54,676,919.70

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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.