Home / 31,425,719.25-43,342,924.20-20,416,016.30

Finding the Fourth Proportional to 31,425,719.25, 43,342,924.20 and 20,416,016.30

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Solution

The fourth proportional to 31,425,719.25, 43,342,924.20 and 20,416,016.30 is: 28,158,141.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,425,719.25 : 43,342,924.20 = 20,416,016.30 : x
  2. Step 2: Convert to fraction form
    31,425,719.25/43,342,924.20 = 20,416,016.30/x
  3. Step 3: Cross multiply
    31,425,719.25x = 43,342,924.20 × 20,416,016.30
  4. Step 4: Simplify right side
    31,425,719.25x = 884,889,846,740,150
  5. Step 5: Solve for x
    x = 884,889,846,740,150/31,425,719.25
  6. Step 6: Final answer
    x = 28,158,141.42

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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.