Home / 90,991,858.78-136,487,788.53-30,407,584.78

Finding the Fourth Proportional to 90,991,858.78, 136,487,788.53 and 30,407,584.78

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Solution

The fourth proportional to 90,991,858.78, 136,487,788.53 and 30,407,584.78 is: 45,611,377.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,991,858.78 : 136,487,788.53 = 30,407,584.78 : x
  2. Step 2: Convert to fraction form
    90,991,858.78/136,487,788.53 = 30,407,584.78/x
  3. Step 3: Cross multiply
    90,991,858.78x = 136,487,788.53 × 30,407,584.78
  4. Step 4: Simplify right side
    90,991,858.78x = 4,150,264,001,160,687
  5. Step 5: Solve for x
    x = 4,150,264,001,160,687/90,991,858.78
  6. Step 6: Final answer
    x = 45,611,377.29

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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.