Home / 78,301,634.88-117,451,208.16-19,214,649.12

Finding the Fourth Proportional to 78,301,634.88, 117,451,208.16 and 19,214,649.12

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Solution

The fourth proportional to 78,301,634.88, 117,451,208.16 and 19,214,649.12 is: 28,821,668.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,301,634.88 : 117,451,208.16 = 19,214,649.12 : x
  2. Step 2: Convert to fraction form
    78,301,634.88/117,451,208.16 = 19,214,649.12/x
  3. Step 3: Cross multiply
    78,301,634.88x = 117,451,208.16 × 19,214,649.12
  4. Step 4: Simplify right side
    78,301,634.88x = 2,256,783,753,514,481
  5. Step 5: Solve for x
    x = 2,256,783,753,514,481/78,301,634.88
  6. Step 6: Final answer
    x = 28,821,668.37

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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.