Home / 7,881,131.80-11,812,512.30-3,621,730.60

Finding the Fourth Proportional to 7,881,131.80, 11,812,512.30 and 3,621,730.60

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Solution

The fourth proportional to 7,881,131.80, 11,812,512.30 and 3,621,730.60 is: 5,428,374.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,881,131.80 : 11,812,512.30 = 3,621,730.60 : x
  2. Step 2: Convert to fraction form
    7,881,131.80/11,812,512.30 = 3,621,730.60/x
  3. Step 3: Cross multiply
    7,881,131.80x = 11,812,512.30 × 3,621,730.60
  4. Step 4: Simplify right side
    7,881,131.80x = 42,781,737,259,786.38
  5. Step 5: Solve for x
    x = 42,781,737,259,786.38/7,881,131.80
  6. Step 6: Final answer
    x = 5,428,374.80

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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.