Home / 28,651,177.80-42,882,288.30-20,148,121.80

Finding the Fourth Proportional to 28,651,177.80, 42,882,288.30 and 20,148,121.80

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Solution

The fourth proportional to 28,651,177.80, 42,882,288.30 and 20,148,121.80 is: 30,155,743.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,651,177.80 : 42,882,288.30 = 20,148,121.80 : x
  2. Step 2: Convert to fraction form
    28,651,177.80/42,882,288.30 = 20,148,121.80/x
  3. Step 3: Cross multiply
    28,651,177.80x = 42,882,288.30 × 20,148,121.80
  4. Step 4: Simplify right side
    28,651,177.80x = 863,997,567,731,114.88
  5. Step 5: Solve for x
    x = 863,997,567,731,114.88/28,651,177.80
  6. Step 6: Final answer
    x = 30,155,743.47

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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.