Home / 30,783,745.84-42,463,059.96-20,329,858.36

Finding the Fourth Proportional to 30,783,745.84, 42,463,059.96 and 20,329,858.36

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Solution

The fourth proportional to 30,783,745.84, 42,463,059.96 and 20,329,858.36 is: 28,042,980.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,783,745.84 : 42,463,059.96 = 20,329,858.36 : x
  2. Step 2: Convert to fraction form
    30,783,745.84/42,463,059.96 = 20,329,858.36/x
  3. Step 3: Cross multiply
    30,783,745.84x = 42,463,059.96 × 20,329,858.36
  4. Step 4: Simplify right side
    30,783,745.84x = 863,267,994,518,987.25
  5. Step 5: Solve for x
    x = 863,267,994,518,987.25/30,783,745.84
  6. Step 6: Final answer
    x = 28,042,980.83

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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.