Home / 81,192,132.96-121,782,075.04-25,857,731.78

Finding the Fourth Proportional to 81,192,132.96, 121,782,075.04 and 25,857,731.78

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Solution

The fourth proportional to 81,192,132.96, 121,782,075.04 and 25,857,731.78 is: 38,784,647.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,192,132.96 : 121,782,075.04 = 25,857,731.78 : x
  2. Step 2: Convert to fraction form
    81,192,132.96/121,782,075.04 = 25,857,731.78/x
  3. Step 3: Cross multiply
    81,192,132.96x = 121,782,075.04 × 25,857,731.78
  4. Step 4: Simplify right side
    81,192,132.96x = 3,149,008,231,996,153
  5. Step 5: Solve for x
    x = 3,149,008,231,996,153/81,192,132.96
  6. Step 6: Final answer
    x = 38,784,647.20

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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.