Home / 69,714,649.40-104,568,189.79-21,188,719.82

Finding the Fourth Proportional to 69,714,649.40, 104,568,189.79 and 21,188,719.82

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Solution

The fourth proportional to 69,714,649.40, 104,568,189.79 and 21,188,719.82 is: 31,781,929.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,714,649.40 : 104,568,189.79 = 21,188,719.82 : x
  2. Step 2: Convert to fraction form
    69,714,649.40/104,568,189.79 = 21,188,719.82/x
  3. Step 3: Cross multiply
    69,714,649.40x = 104,568,189.79 × 21,188,719.82
  4. Step 4: Simplify right side
    69,714,649.40x = 2,215,666,075,544,894.75
  5. Step 5: Solve for x
    x = 2,215,666,075,544,894.75/69,714,649.40
  6. Step 6: Final answer
    x = 31,781,929.55

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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.