Home / 31,690,034.85-43,736,109.90-18,636,662.91

Finding the Fourth Proportional to 31,690,034.85, 43,736,109.90 and 18,636,662.91

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Solution

The fourth proportional to 31,690,034.85, 43,736,109.90 and 18,636,662.91 is: 25,720,865.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,690,034.85 : 43,736,109.90 = 18,636,662.91 : x
  2. Step 2: Convert to fraction form
    31,690,034.85/43,736,109.90 = 18,636,662.91/x
  3. Step 3: Cross multiply
    31,690,034.85x = 43,736,109.90 × 18,636,662.91
  4. Step 4: Simplify right side
    31,690,034.85x = 815,095,137,201,013.75
  5. Step 5: Solve for x
    x = 815,095,137,201,013.75/31,690,034.85
  6. Step 6: Final answer
    x = 25,720,865.91

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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.