Home / 80,511.36-120,752.64-36,130.56

Finding the Fourth Proportional to 80,511.36, 120,752.64 and 36,130.56

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Solution

The fourth proportional to 80,511.36, 120,752.64 and 36,130.56 is: 54,189.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,511.36 : 120,752.64 = 36,130.56 : x
  2. Step 2: Convert to fraction form
    80,511.36/120,752.64 = 36,130.56/x
  3. Step 3: Cross multiply
    80,511.36x = 120,752.64 × 36,130.56
  4. Step 4: Simplify right side
    80,511.36x = 4,362,860,504.68
  5. Step 5: Solve for x
    x = 4,362,860,504.68/80,511.36
  6. Step 6: Final answer
    x = 54,189.38

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1.5x scale

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.