Home / 28,722,128.60-43,104,188.10-20,219,072.60

Finding the Fourth Proportional to 28,722,128.60, 43,104,188.10 and 20,219,072.60

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Solution

The fourth proportional to 28,722,128.60, 43,104,188.10 and 20,219,072.60 is: 30,343,388.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,722,128.60 : 43,104,188.10 = 20,219,072.60 : x
  2. Step 2: Convert to fraction form
    28,722,128.60/43,104,188.10 = 20,219,072.60/x
  3. Step 3: Cross multiply
    28,722,128.60x = 43,104,188.10 × 20,219,072.60
  4. Step 4: Simplify right side
    28,722,128.60x = 871,526,708,557,956.12
  5. Step 5: Solve for x
    x = 871,526,708,557,956.12/28,722,128.60
  6. Step 6: Final answer
    x = 30,343,388.57

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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.