Home / 81,654,422.40-122,481,633.60-54,444,643.20

Finding the Fourth Proportional to 81,654,422.40, 122,481,633.60 and 54,444,643.20

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Solution

The fourth proportional to 81,654,422.40, 122,481,633.60 and 54,444,643.20 is: 81,666,964.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,654,422.40 : 122,481,633.60 = 54,444,643.20 : x
  2. Step 2: Convert to fraction form
    81,654,422.40/122,481,633.60 = 54,444,643.20/x
  3. Step 3: Cross multiply
    81,654,422.40x = 122,481,633.60 × 54,444,643.20
  4. Step 4: Simplify right side
    81,654,422.40x = 6,668,468,839,905,132
  5. Step 5: Solve for x
    x = 6,668,468,839,905,132/81,654,422.40
  6. Step 6: Final answer
    x = 81,666,964.80

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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.