Home / 81,465,648.40-122,340,190.20-43,201,896.40

Finding the Fourth Proportional to 81,465,648.40, 122,340,190.20 and 43,201,896.40

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Solution

The fourth proportional to 81,465,648.40, 122,340,190.20 and 43,201,896.40 is: 64,877,998.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,465,648.40 : 122,340,190.20 = 43,201,896.40 : x
  2. Step 2: Convert to fraction form
    81,465,648.40/122,340,190.20 = 43,201,896.40/x
  3. Step 3: Cross multiply
    81,465,648.40x = 122,340,190.20 × 43,201,896.40
  4. Step 4: Simplify right side
    81,465,648.40x = 5,285,328,222,576,695
  5. Step 5: Solve for x
    x = 5,285,328,222,576,695/81,465,648.40
  6. Step 6: Final answer
    x = 64,877,998.60

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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.