Home / 81,448,505.40-122,172,758.10-77,669,369.40

Finding the Fourth Proportional to 81,448,505.40, 122,172,758.10 and 77,669,369.40

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Solution

The fourth proportional to 81,448,505.40, 122,172,758.10 and 77,669,369.40 is: 116,504,054.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,448,505.40 : 122,172,758.10 = 77,669,369.40 : x
  2. Step 2: Convert to fraction form
    81,448,505.40/122,172,758.10 = 77,669,369.40/x
  3. Step 3: Cross multiply
    81,448,505.40x = 122,172,758.10 × 77,669,369.40
  4. Step 4: Simplify right side
    81,448,505.40x = 9,489,081,079,485,742
  5. Step 5: Solve for x
    x = 9,489,081,079,485,742/81,448,505.40
  6. Step 6: Final answer
    x = 116,504,054.10

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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.