Home / 68,415.90-102,621.60-30,975.98

Finding the Fourth Proportional to 68,415.90, 102,621.60 and 30,975.98

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Solution

The fourth proportional to 68,415.90, 102,621.60 and 30,975.98 is: 46,462.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,415.90 : 102,621.60 = 30,975.98 : x
  2. Step 2: Convert to fraction form
    68,415.90/102,621.60 = 30,975.98/x
  3. Step 3: Cross multiply
    68,415.90x = 102,621.60 × 30,975.98
  4. Step 4: Simplify right side
    68,415.90x = 3,178,804,116.06
  5. Step 5: Solve for x
    x = 3,178,804,116.06/68,415.90
  6. Step 6: Final answer
    x = 46,462.94

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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.