Home / 68,722,012,333.82-103,097,855,709.09-20,918,759,821.45

Finding the Fourth Proportional to 68,722,012,333.82, 103,097,855,709.09 and 20,918,759,821.45

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Solution

The fourth proportional to 68,722,012,333.82, 103,097,855,709.09 and 20,918,759,821.45 is: 31,382,656,130.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,722,012,333.82 : 103,097,855,709.09 = 20,918,759,821.45 : x
  2. Step 2: Convert to fraction form
    68,722,012,333.82/103,097,855,709.09 = 20,918,759,821.45/x
  3. Step 3: Cross multiply
    68,722,012,333.82x = 103,097,855,709.09 × 20,918,759,821.45
  4. Step 4: Simplify right side
    68,722,012,333.82x = 2,156,679,281,684,961,296,384
  5. Step 5: Solve for x
    x = 2,156,679,281,684,961,296,384/68,722,012,333.82
  6. Step 6: Final answer
    x = 31,382,656,130.75

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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.