Home / 81,428,440.51-122,142,583.01-20,844,069.31

Finding the Fourth Proportional to 81,428,440.51, 122,142,583.01 and 20,844,069.31

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Solution

The fourth proportional to 81,428,440.51, 122,142,583.01 and 20,844,069.31 is: 31,266,084.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,428,440.51 : 122,142,583.01 = 20,844,069.31 : x
  2. Step 2: Convert to fraction form
    81,428,440.51/122,142,583.01 = 20,844,069.31/x
  3. Step 3: Cross multiply
    81,428,440.51x = 122,142,583.01 × 20,844,069.31
  4. Step 4: Simplify right side
    81,428,440.51x = 2,545,948,465,858,648
  5. Step 5: Solve for x
    x = 2,545,948,465,858,648/81,428,440.51
  6. Step 6: Final answer
    x = 31,266,084.06

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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.