Home / 71,287,898-98,360,436.23-40,348,067.28

Finding the Fourth Proportional to 71,287,898, 98,360,436.23 and 40,348,067.28

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Solution

The fourth proportional to 71,287,898, 98,360,436.23 and 40,348,067.28 is: 55,670,788.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,287,898 : 98,360,436.23 = 40,348,067.28 : x
  2. Step 2: Convert to fraction form
    71,287,898/98,360,436.23 = 40,348,067.28/x
  3. Step 3: Cross multiply
    71,287,898x = 98,360,436.23 × 40,348,067.28
  4. Step 4: Simplify right side
    71,287,898x = 3,968,653,498,698,190
  5. Step 5: Solve for x
    x = 3,968,653,498,698,190/71,287,898
  6. Step 6: Final answer
    x = 55,670,788.59

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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.