Home / 81,044,625.90-121,615,355.44-74,450,981.28

Finding the Fourth Proportional to 81,044,625.90, 121,615,355.44 and 74,450,981.28

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Solution

The fourth proportional to 81,044,625.90, 121,615,355.44 and 74,450,981.28 is: 111,720,949.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,044,625.90 : 121,615,355.44 = 74,450,981.28 : x
  2. Step 2: Convert to fraction form
    81,044,625.90/121,615,355.44 = 74,450,981.28/x
  3. Step 3: Cross multiply
    81,044,625.90x = 121,615,355.44 × 74,450,981.28
  4. Step 4: Simplify right side
    81,044,625.90x = 9,054,382,551,773,106
  5. Step 5: Solve for x
    x = 9,054,382,551,773,106/81,044,625.90
  6. Step 6: Final answer
    x = 111,720,949.43

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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.