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Finding the Fourth Proportional to 68,773,904.20, 94,908,775.98 and 39,404,648.44

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Solution

The fourth proportional to 68,773,904.20, 94,908,775.98 and 39,404,648.44 is: 54,378,866.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,773,904.20 : 94,908,775.98 = 39,404,648.44 : x
  2. Step 2: Convert to fraction form
    68,773,904.20/94,908,775.98 = 39,404,648.44/x
  3. Step 3: Cross multiply
    68,773,904.20x = 94,908,775.98 × 39,404,648.44
  4. Step 4: Simplify right side
    68,773,904.20x = 3,739,846,951,362,616.50
  5. Step 5: Solve for x
    x = 3,739,846,951,362,616.50/68,773,904.20
  6. Step 6: Final answer
    x = 54,378,866.44

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.