Home / 30,178,376.10-45,273,469.05-12,906,543.60

Finding the Fourth Proportional to 30,178,376.10, 45,273,469.05 and 12,906,543.60

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Solution

The fourth proportional to 30,178,376.10, 45,273,469.05 and 12,906,543.60 is: 19,362,340.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,178,376.10 : 45,273,469.05 = 12,906,543.60 : x
  2. Step 2: Convert to fraction form
    30,178,376.10/45,273,469.05 = 12,906,543.60/x
  3. Step 3: Cross multiply
    30,178,376.10x = 45,273,469.05 × 12,906,543.60
  4. Step 4: Simplify right side
    30,178,376.10x = 584,324,002,217,075.50
  5. Step 5: Solve for x
    x = 584,324,002,217,075.50/30,178,376.10
  6. Step 6: Final answer
    x = 19,362,340.78

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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.