Home / 30,783,723.84-42,463,029.60-20,329,836.30

Finding the Fourth Proportional to 30,783,723.84, 42,463,029.60 and 20,329,836.30

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Solution

The fourth proportional to 30,783,723.84, 42,463,029.60 and 20,329,836.30 is: 28,042,950.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,783,723.84 : 42,463,029.60 = 20,329,836.30 : x
  2. Step 2: Convert to fraction form
    30,783,723.84/42,463,029.60 = 20,329,836.30/x
  3. Step 3: Cross multiply
    30,783,723.84x = 42,463,029.60 × 20,329,836.30
  4. Step 4: Simplify right side
    30,783,723.84x = 863,266,440,570,054.50
  5. Step 5: Solve for x
    x = 863,266,440,570,054.50/30,783,723.84
  6. Step 6: Final answer
    x = 28,042,950.39

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1.5x scale

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.