Home / 81,422,724.80-122,134,087.20-43,158,972.80

Finding the Fourth Proportional to 81,422,724.80, 122,134,087.20 and 43,158,972.80

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Solution

The fourth proportional to 81,422,724.80, 122,134,087.20 and 43,158,972.80 is: 64,738,459.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,422,724.80 : 122,134,087.20 = 43,158,972.80 : x
  2. Step 2: Convert to fraction form
    81,422,724.80/122,134,087.20 = 43,158,972.80/x
  3. Step 3: Cross multiply
    81,422,724.80x = 122,134,087.20 × 43,158,972.80
  4. Step 4: Simplify right side
    81,422,724.80x = 5,271,181,747,417,628
  5. Step 5: Solve for x
    x = 5,271,181,747,417,628/81,422,724.80
  6. Step 6: Final answer
    x = 64,738,459.20

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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.