Home / 28,084,672.80-42,033,697.20-20,386,432.80

Finding the Fourth Proportional to 28,084,672.80, 42,033,697.20 and 20,386,432.80

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Solution

The fourth proportional to 28,084,672.80, 42,033,697.20 and 20,386,432.80 is: 30,511,914.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,084,672.80 : 42,033,697.20 = 20,386,432.80 : x
  2. Step 2: Convert to fraction form
    28,084,672.80/42,033,697.20 = 20,386,432.80/x
  3. Step 3: Cross multiply
    28,084,672.80x = 42,033,697.20 × 20,386,432.80
  4. Step 4: Simplify right side
    28,084,672.80x = 856,917,143,303,348.25
  5. Step 5: Solve for x
    x = 856,917,143,303,348.25/28,084,672.80
  6. Step 6: Final answer
    x = 30,511,914.79

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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.