Home / 72,682,265.08-100,302,721.14-39,642,514.28

Finding the Fourth Proportional to 72,682,265.08, 100,302,721.14 and 39,642,514.28

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Solution

The fourth proportional to 72,682,265.08, 100,302,721.14 and 39,642,514.28 is: 54,707,321.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,682,265.08 : 100,302,721.14 = 39,642,514.28 : x
  2. Step 2: Convert to fraction form
    72,682,265.08/100,302,721.14 = 39,642,514.28/x
  3. Step 3: Cross multiply
    72,682,265.08x = 100,302,721.14 × 39,642,514.28
  4. Step 4: Simplify right side
    72,682,265.08x = 3,976,252,055,115,308
  5. Step 5: Solve for x
    x = 3,976,252,055,115,308/72,682,265.08
  6. Step 6: Final answer
    x = 54,707,321.67

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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.