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Finding the Fourth Proportional to 68,359,693.80, 102,586,779.90 and 49,206,822.60

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Solution

The fourth proportional to 68,359,693.80, 102,586,779.90 and 49,206,822.60 is: 73,844,237.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,359,693.80 : 102,586,779.90 = 49,206,822.60 : x
  2. Step 2: Convert to fraction form
    68,359,693.80/102,586,779.90 = 49,206,822.60/x
  3. Step 3: Cross multiply
    68,359,693.80x = 102,586,779.90 × 49,206,822.60
  4. Step 4: Simplify right side
    68,359,693.80x = 5,047,969,479,644,546
  5. Step 5: Solve for x
    x = 5,047,969,479,644,546/68,359,693.80
  6. Step 6: Final answer
    x = 73,844,237.72

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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.