Home / 86,919,323.78-119,948,273.70-47,760,986.72

Finding the Fourth Proportional to 86,919,323.78, 119,948,273.70 and 47,760,986.72

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Solution

The fourth proportional to 86,919,323.78, 119,948,273.70 and 47,760,986.72 is: 65,909,945.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,919,323.78 : 119,948,273.70 = 47,760,986.72 : x
  2. Step 2: Convert to fraction form
    86,919,323.78/119,948,273.70 = 47,760,986.72/x
  3. Step 3: Cross multiply
    86,919,323.78x = 119,948,273.70 × 47,760,986.72
  4. Step 4: Simplify right side
    86,919,323.78x = 5,728,847,907,272,625
  5. Step 5: Solve for x
    x = 5,728,847,907,272,625/86,919,323.78
  6. Step 6: Final answer
    x = 65,909,945.66

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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.