Home / 39,870,744.38-55,021,649.31-21,536,029.88

Finding the Fourth Proportional to 39,870,744.38, 55,021,649.31 and 21,536,029.88

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Solution

The fourth proportional to 39,870,744.38, 55,021,649.31 and 21,536,029.88 is: 29,719,733.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,870,744.38 : 55,021,649.31 = 21,536,029.88 : x
  2. Step 2: Convert to fraction form
    39,870,744.38/55,021,649.31 = 21,536,029.88/x
  3. Step 3: Cross multiply
    39,870,744.38x = 55,021,649.31 × 21,536,029.88
  4. Step 4: Simplify right side
    39,870,744.38x = 1,184,947,883,311,933.25
  5. Step 5: Solve for x
    x = 1,184,947,883,311,933.25/39,870,744.38
  6. Step 6: Final answer
    x = 29,719,733.15

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.