Home / 85,371,616.98-128,056,997.18-20,675,420.30

Finding the Fourth Proportional to 85,371,616.98, 128,056,997.18 and 20,675,420.30

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Solution

The fourth proportional to 85,371,616.98, 128,056,997.18 and 20,675,420.30 is: 31,013,026.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,371,616.98 : 128,056,997.18 = 20,675,420.30 : x
  2. Step 2: Convert to fraction form
    85,371,616.98/128,056,997.18 = 20,675,420.30/x
  3. Step 3: Cross multiply
    85,371,616.98x = 128,056,997.18 × 20,675,420.30
  4. Step 4: Simplify right side
    85,371,616.98x = 2,647,632,239,424,245.50
  5. Step 5: Solve for x
    x = 2,647,632,239,424,245.50/85,371,616.98
  6. Step 6: Final answer
    x = 31,013,026.73

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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.