Home / 28,072,649.70-42,108,974.55-9,879,652.80

Finding the Fourth Proportional to 28,072,649.70, 42,108,974.55 and 9,879,652.80

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Solution

The fourth proportional to 28,072,649.70, 42,108,974.55 and 9,879,652.80 is: 14,819,479.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,072,649.70 : 42,108,974.55 = 9,879,652.80 : x
  2. Step 2: Convert to fraction form
    28,072,649.70/42,108,974.55 = 9,879,652.80/x
  3. Step 3: Cross multiply
    28,072,649.70x = 42,108,974.55 × 9,879,652.80
  4. Step 4: Simplify right side
    28,072,649.70x = 416,022,048,318,036.25
  5. Step 5: Solve for x
    x = 416,022,048,318,036.25/28,072,649.70
  6. Step 6: Final answer
    x = 14,819,479.20

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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.