Home / 81,483,815.13-122,225,755.77-20,074,168.41

Finding the Fourth Proportional to 81,483,815.13, 122,225,755.77 and 20,074,168.41

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Solution

The fourth proportional to 81,483,815.13, 122,225,755.77 and 20,074,168.41 is: 30,111,260.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,483,815.13 : 122,225,755.77 = 20,074,168.41 : x
  2. Step 2: Convert to fraction form
    81,483,815.13/122,225,755.77 = 20,074,168.41/x
  3. Step 3: Cross multiply
    81,483,815.13x = 122,225,755.77 × 20,074,168.41
  4. Step 4: Simplify right side
    81,483,815.13x = 2,453,580,405,366,509
  5. Step 5: Solve for x
    x = 2,453,580,405,366,509/81,483,815.13
  6. Step 6: Final answer
    x = 30,111,260.76

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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.