Home / 39,159,790.51-54,041,410.97-21,519,789.78

Finding the Fourth Proportional to 39,159,790.51, 54,041,410.97 and 21,519,789.78

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Solution

The fourth proportional to 39,159,790.51, 54,041,410.97 and 21,519,789.78 is: 29,697,804.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,159,790.51 : 54,041,410.97 = 21,519,789.78 : x
  2. Step 2: Convert to fraction form
    39,159,790.51/54,041,410.97 = 21,519,789.78/x
  3. Step 3: Cross multiply
    39,159,790.51x = 54,041,410.97 × 21,519,789.78
  4. Step 4: Simplify right side
    39,159,790.51x = 1,162,959,803,488,986
  5. Step 5: Solve for x
    x = 1,162,959,803,488,986/39,159,790.51
  6. Step 6: Final answer
    x = 29,697,804.52

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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.