Home / 81,129,113.53-111,996,782.53-54,352,550.27

Finding the Fourth Proportional to 81,129,113.53, 111,996,782.53 and 54,352,550.27

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Solution

The fourth proportional to 81,129,113.53, 111,996,782.53 and 54,352,550.27 is: 75,032,383.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,129,113.53 : 111,996,782.53 = 54,352,550.27 : x
  2. Step 2: Convert to fraction form
    81,129,113.53/111,996,782.53 = 54,352,550.27/x
  3. Step 3: Cross multiply
    81,129,113.53x = 111,996,782.53 × 54,352,550.27
  4. Step 4: Simplify right side
    81,129,113.53x = 6,087,310,752,684,194
  5. Step 5: Solve for x
    x = 6,087,310,752,684,194/81,129,113.53
  6. Step 6: Final answer
    x = 75,032,383.42

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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.