Home / 68,722,013,929.82-103,097,858,109.27-20,918,761,421.92

Finding the Fourth Proportional to 68,722,013,929.82, 103,097,858,109.27 and 20,918,761,421.92

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Solution

The fourth proportional to 68,722,013,929.82, 103,097,858,109.27 and 20,918,761,421.92 is: 31,382,658,533.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,722,013,929.82 : 103,097,858,109.27 = 20,918,761,421.92 : x
  2. Step 2: Convert to fraction form
    68,722,013,929.82/103,097,858,109.27 = 20,918,761,421.92/x
  3. Step 3: Cross multiply
    68,722,013,929.82x = 103,097,858,109.27 × 20,918,761,421.92
  4. Step 4: Simplify right side
    68,722,013,929.82x = 2,156,679,496,898,779,283,456
  5. Step 5: Solve for x
    x = 2,156,679,496,898,779,283,456/68,722,013,929.82
  6. Step 6: Final answer
    x = 31,382,658,533.57

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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.