Home / 80,692.25-121,038.98-28,101.60

Finding the Fourth Proportional to 80,692.25, 121,038.98 and 28,101.60

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Solution

The fourth proportional to 80,692.25, 121,038.98 and 28,101.60 is: 42,152.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,692.25 : 121,038.98 = 28,101.60 : x
  2. Step 2: Convert to fraction form
    80,692.25/121,038.98 = 28,101.60/x
  3. Step 3: Cross multiply
    80,692.25x = 121,038.98 × 28,101.60
  4. Step 4: Simplify right side
    80,692.25x = 3,401,388,859.86
  5. Step 5: Solve for x
    x = 3,401,388,859.86/80,692.25
  6. Step 6: Final answer
    x = 42,152.61

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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.