Home / 69,679,846.46-104,513,015.96-21,158,126.78

Finding the Fourth Proportional to 69,679,846.46, 104,513,015.96 and 21,158,126.78

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Solution

The fourth proportional to 69,679,846.46, 104,513,015.96 and 21,158,126.78 is: 31,735,139.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,679,846.46 : 104,513,015.96 = 21,158,126.78 : x
  2. Step 2: Convert to fraction form
    69,679,846.46/104,513,015.96 = 21,158,126.78/x
  3. Step 3: Cross multiply
    69,679,846.46x = 104,513,015.96 × 21,158,126.78
  4. Step 4: Simplify right side
    69,679,846.46x = 2,211,299,641,997,335.25
  5. Step 5: Solve for x
    x = 2,211,299,641,997,335.25/69,679,846.46
  6. Step 6: Final answer
    x = 31,735,139.42

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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.