Home / 81,428,437.26-122,142,578.13-20,844,066.06

Finding the Fourth Proportional to 81,428,437.26, 122,142,578.13 and 20,844,066.06

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Solution

The fourth proportional to 81,428,437.26, 122,142,578.13 and 20,844,066.06 is: 31,266,079.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,428,437.26 : 122,142,578.13 = 20,844,066.06 : x
  2. Step 2: Convert to fraction form
    81,428,437.26/122,142,578.13 = 20,844,066.06/x
  3. Step 3: Cross multiply
    81,428,437.26x = 122,142,578.13 × 20,844,066.06
  4. Step 4: Simplify right side
    81,428,437.26x = 2,545,947,967,280,431
  5. Step 5: Solve for x
    x = 2,545,947,967,280,431/81,428,437.26
  6. Step 6: Final answer
    x = 31,266,079.18

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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.