Home / 69,413,807.96-104,099,749.13-20,878,777.52

Finding the Fourth Proportional to 69,413,807.96, 104,099,749.13 and 20,878,777.52

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Solution

The fourth proportional to 69,413,807.96, 104,099,749.13 and 20,878,777.52 is: 31,311,860.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,413,807.96 : 104,099,749.13 = 20,878,777.52 : x
  2. Step 2: Convert to fraction form
    69,413,807.96/104,099,749.13 = 20,878,777.52/x
  3. Step 3: Cross multiply
    69,413,807.96x = 104,099,749.13 × 20,878,777.52
  4. Step 4: Simplify right side
    69,413,807.96x = 2,173,475,501,504,781.75
  5. Step 5: Solve for x
    x = 2,173,475,501,504,781.75/69,413,807.96
  6. Step 6: Final answer
    x = 31,311,860.93

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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.