Home / 69,679,719.15-104,512,824.99-21,157,999.47

Finding the Fourth Proportional to 69,679,719.15, 104,512,824.99 and 21,157,999.47

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Solution

The fourth proportional to 69,679,719.15, 104,512,824.99 and 21,157,999.47 is: 31,734,948.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,679,719.15 : 104,512,824.99 = 21,157,999.47 : x
  2. Step 2: Convert to fraction form
    69,679,719.15/104,512,824.99 = 21,157,999.47/x
  3. Step 3: Cross multiply
    69,679,719.15x = 104,512,824.99 × 21,157,999.47
  4. Step 4: Simplify right side
    69,679,719.15x = 2,211,282,295,746,622.50
  5. Step 5: Solve for x
    x = 2,211,282,295,746,622.50/69,679,719.15
  6. Step 6: Final answer
    x = 31,734,948.46

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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.