Home / 69,679,728.42-104,512,838.86-21,158,008.72

Finding the Fourth Proportional to 69,679,728.42, 104,512,838.86 and 21,158,008.72

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Solution

The fourth proportional to 69,679,728.42, 104,512,838.86 and 21,158,008.72 is: 31,734,962.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,679,728.42 : 104,512,838.86 = 21,158,008.72 : x
  2. Step 2: Convert to fraction form
    69,679,728.42/104,512,838.86 = 21,158,008.72/x
  3. Step 3: Cross multiply
    69,679,728.42x = 104,512,838.86 × 21,158,008.72
  4. Step 4: Simplify right side
    69,679,728.42x = 2,211,283,555,951,834.75
  5. Step 5: Solve for x
    x = 2,211,283,555,951,834.75/69,679,728.42
  6. Step 6: Final answer
    x = 31,734,962.32

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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.