Home / 80,035.10-120,127.98-40,620.50

Finding the Fourth Proportional to 80,035.10, 120,127.98 and 40,620.50

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Solution

The fourth proportional to 80,035.10, 120,127.98 and 40,620.50 is: 60,968.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,035.10 : 120,127.98 = 40,620.50 : x
  2. Step 2: Convert to fraction form
    80,035.10/120,127.98 = 40,620.50/x
  3. Step 3: Cross multiply
    80,035.10x = 120,127.98 × 40,620.50
  4. Step 4: Simplify right side
    80,035.10x = 4,879,658,611.59
  5. Step 5: Solve for x
    x = 4,879,658,611.59/80,035.10
  6. Step 6: Final answer
    x = 60,968.98

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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.