Home / 28,379,687.20-42,569,530.80-19,869,632.80

Finding the Fourth Proportional to 28,379,687.20, 42,569,530.80 and 19,869,632.80

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Solution

The fourth proportional to 28,379,687.20, 42,569,530.80 and 19,869,632.80 is: 29,804,449.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,379,687.20 : 42,569,530.80 = 19,869,632.80 : x
  2. Step 2: Convert to fraction form
    28,379,687.20/42,569,530.80 = 19,869,632.80/x
  3. Step 3: Cross multiply
    28,379,687.20x = 42,569,530.80 × 19,869,632.80
  4. Step 4: Simplify right side
    28,379,687.20x = 845,840,945,464,290.25
  5. Step 5: Solve for x
    x = 845,840,945,464,290.25/28,379,687.20
  6. Step 6: Final answer
    x = 29,804,449.20

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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.