Home / 69,679,730.41-104,512,841.87-21,158,010.72

Finding the Fourth Proportional to 69,679,730.41, 104,512,841.87 and 21,158,010.72

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Solution

The fourth proportional to 69,679,730.41, 104,512,841.87 and 21,158,010.72 is: 31,734,965.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,679,730.41 : 104,512,841.87 = 21,158,010.72 : x
  2. Step 2: Convert to fraction form
    69,679,730.41/104,512,841.87 = 21,158,010.72/x
  3. Step 3: Cross multiply
    69,679,730.41x = 104,512,841.87 × 21,158,010.72
  4. Step 4: Simplify right side
    69,679,730.41x = 2,211,283,828,557,334.50
  5. Step 5: Solve for x
    x = 2,211,283,828,557,334.50/69,679,730.41
  6. Step 6: Final answer
    x = 31,734,965.33

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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.