Home / 81,189,916.68-111,933,692.46-64,500,033.72

Finding the Fourth Proportional to 81,189,916.68, 111,933,692.46 and 64,500,033.72

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Solution

The fourth proportional to 81,189,916.68, 111,933,692.46 and 64,500,033.72 is: 88,923,935.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,189,916.68 : 111,933,692.46 = 64,500,033.72 : x
  2. Step 2: Convert to fraction form
    81,189,916.68/111,933,692.46 = 64,500,033.72/x
  3. Step 3: Cross multiply
    81,189,916.68x = 111,933,692.46 × 64,500,033.72
  4. Step 4: Simplify right side
    81,189,916.68x = 7,219,726,938,074,109
  5. Step 5: Solve for x
    x = 7,219,726,938,074,109/81,189,916.68
  6. Step 6: Final answer
    x = 88,923,935.80

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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.