Home / 29,379,380.78-40,500,815.22-20,531,361.57

Finding the Fourth Proportional to 29,379,380.78, 40,500,815.22 and 20,531,361.57

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Solution

The fourth proportional to 29,379,380.78, 40,500,815.22 and 20,531,361.57 is: 28,303,417.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,379,380.78 : 40,500,815.22 = 20,531,361.57 : x
  2. Step 2: Convert to fraction form
    29,379,380.78/40,500,815.22 = 20,531,361.57/x
  3. Step 3: Cross multiply
    29,379,380.78x = 40,500,815.22 × 20,531,361.57
  4. Step 4: Simplify right side
    29,379,380.78x = 831,536,881,161,579.12
  5. Step 5: Solve for x
    x = 831,536,881,161,579.12/29,379,380.78
  6. Step 6: Final answer
    x = 28,303,417.54

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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.