Home / 71,929,443.69-107,876,203.79-28,219,110.75

Finding the Fourth Proportional to 71,929,443.69, 107,876,203.79 and 28,219,110.75

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Solution

The fourth proportional to 71,929,443.69, 107,876,203.79 and 28,219,110.75 is: 42,321,619.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,929,443.69 : 107,876,203.79 = 28,219,110.75 : x
  2. Step 2: Convert to fraction form
    71,929,443.69/107,876,203.79 = 28,219,110.75/x
  3. Step 3: Cross multiply
    71,929,443.69x = 107,876,203.79 × 28,219,110.75
  4. Step 4: Simplify right side
    71,929,443.69x = 3,044,170,541,898,484
  5. Step 5: Solve for x
    x = 3,044,170,541,898,484/71,929,443.69
  6. Step 6: Final answer
    x = 42,321,619.43

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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.