Home / 42,768,609.40-64,040,939.70-31,347,220.60

Finding the Fourth Proportional to 42,768,609.40, 64,040,939.70 and 31,347,220.60

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Solution

The fourth proportional to 42,768,609.40, 64,040,939.70 and 31,347,220.60 is: 46,938,759.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,768,609.40 : 64,040,939.70 = 31,347,220.60 : x
  2. Step 2: Convert to fraction form
    42,768,609.40/64,040,939.70 = 31,347,220.60/x
  3. Step 3: Cross multiply
    42,768,609.40x = 64,040,939.70 × 31,347,220.60
  4. Step 4: Simplify right side
    42,768,609.40x = 2,007,505,464,207,198
  5. Step 5: Solve for x
    x = 2,007,505,464,207,198/42,768,609.40
  6. Step 6: Final answer
    x = 46,938,759.35

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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.