Home / 31,371,742.92-43,285,911.92-18,981,528.20

Finding the Fourth Proportional to 31,371,742.92, 43,285,911.92 and 18,981,528.20

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Solution

The fourth proportional to 31,371,742.92, 43,285,911.92 and 18,981,528.20 is: 26,190,217.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,371,742.92 : 43,285,911.92 = 18,981,528.20 : x
  2. Step 2: Convert to fraction form
    31,371,742.92/43,285,911.92 = 18,981,528.20/x
  3. Step 3: Cross multiply
    31,371,742.92x = 43,285,911.92 × 18,981,528.20
  4. Step 4: Simplify right side
    31,371,742.92x = 821,632,757,772,196.12
  5. Step 5: Solve for x
    x = 821,632,757,772,196.12/31,371,742.92
  6. Step 6: Final answer
    x = 26,190,217.10

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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.