Home / 91,781,709.40-137,678,784.90-31,202,003.80

Finding the Fourth Proportional to 91,781,709.40, 137,678,784.90 and 31,202,003.80

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Solution

The fourth proportional to 91,781,709.40, 137,678,784.90 and 31,202,003.80 is: 46,805,120.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,781,709.40 : 137,678,784.90 = 31,202,003.80 : x
  2. Step 2: Convert to fraction form
    91,781,709.40/137,678,784.90 = 31,202,003.80/x
  3. Step 3: Cross multiply
    91,781,709.40x = 137,678,784.90 × 31,202,003.80
  4. Step 4: Simplify right side
    91,781,709.40x = 4,295,853,969,629,183
  5. Step 5: Solve for x
    x = 4,295,853,969,629,183/91,781,709.40
  6. Step 6: Final answer
    x = 46,805,120.52

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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.