Home / 68,083.10-102,124.59-20,698.58

Finding the Fourth Proportional to 68,083.10, 102,124.59 and 20,698.58

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Solution

The fourth proportional to 68,083.10, 102,124.59 and 20,698.58 is: 31,047.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,083.10 : 102,124.59 = 20,698.58 : x
  2. Step 2: Convert to fraction form
    68,083.10/102,124.59 = 20,698.58/x
  3. Step 3: Cross multiply
    68,083.10x = 102,124.59 × 20,698.58
  4. Step 4: Simplify right side
    68,083.10x = 2,113,833,485.46
  5. Step 5: Solve for x
    x = 2,113,833,485.46/68,083.10
  6. Step 6: Final answer
    x = 31,047.85

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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.