Home / 68,009.40-102,014.10-61,120.35

Finding the Fourth Proportional to 68,009.40, 102,014.10 and 61,120.35

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Solution

The fourth proportional to 68,009.40, 102,014.10 and 61,120.35 is: 91,680.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,009.40 : 102,014.10 = 61,120.35 : x
  2. Step 2: Convert to fraction form
    68,009.40/102,014.10 = 61,120.35/x
  3. Step 3: Cross multiply
    68,009.40x = 102,014.10 × 61,120.35
  4. Step 4: Simplify right side
    68,009.40x = 6,235,137,496.94
  5. Step 5: Solve for x
    x = 6,235,137,496.94/68,009.40
  6. Step 6: Final answer
    x = 91,680.53

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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.