Home / 68,722,013,931.82-103,097,858,112.27-20,918,761,423.92

Finding the Fourth Proportional to 68,722,013,931.82, 103,097,858,112.27 and 20,918,761,423.92

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Solution

The fourth proportional to 68,722,013,931.82, 103,097,858,112.27 and 20,918,761,423.92 is: 31,382,658,536.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,722,013,931.82 : 103,097,858,112.27 = 20,918,761,423.92 : x
  2. Step 2: Convert to fraction form
    68,722,013,931.82/103,097,858,112.27 = 20,918,761,423.92/x
  3. Step 3: Cross multiply
    68,722,013,931.82x = 103,097,858,112.27 × 20,918,761,423.92
  4. Step 4: Simplify right side
    68,722,013,931.82x = 2,156,679,497,167,731,163,136
  5. Step 5: Solve for x
    x = 2,156,679,497,167,731,163,136/68,722,013,931.82
  6. Step 6: Final answer
    x = 31,382,658,536.57

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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.