Home / 68,022.15-102,051.86-20,638.77

Finding the Fourth Proportional to 68,022.15, 102,051.86 and 20,638.77

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Solution

The fourth proportional to 68,022.15, 102,051.86 and 20,638.77 is: 30,963.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,022.15 : 102,051.86 = 20,638.77 : x
  2. Step 2: Convert to fraction form
    68,022.15/102,051.86 = 20,638.77/x
  3. Step 3: Cross multiply
    68,022.15x = 102,051.86 × 20,638.77
  4. Step 4: Simplify right side
    68,022.15x = 2,106,224,763.42
  5. Step 5: Solve for x
    x = 2,106,224,763.42/68,022.15
  6. Step 6: Final answer
    x = 30,963.81

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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.