Home / 81,192,133.21-121,782,075.40-25,857,732.04

Finding the Fourth Proportional to 81,192,133.21, 121,782,075.40 and 25,857,732.04

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Solution

The fourth proportional to 81,192,133.21, 121,782,075.40 and 25,857,732.04 is: 38,784,647.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,192,133.21 : 121,782,075.40 = 25,857,732.04 : x
  2. Step 2: Convert to fraction form
    81,192,133.21/121,782,075.40 = 25,857,732.04/x
  3. Step 3: Cross multiply
    81,192,133.21x = 121,782,075.40 × 25,857,732.04
  4. Step 4: Simplify right side
    81,192,133.21x = 3,149,008,272,968,276
  5. Step 5: Solve for x
    x = 3,149,008,272,968,276/81,192,133.21
  6. Step 6: Final answer
    x = 38,784,647.58

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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.