Home / 80,047.03-120,070.54-30,138.32

Finding the Fourth Proportional to 80,047.03, 120,070.54 and 30,138.32

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Solution

The fourth proportional to 80,047.03, 120,070.54 and 30,138.32 is: 45,207.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,047.03 : 120,070.54 = 30,138.32 : x
  2. Step 2: Convert to fraction form
    80,047.03/120,070.54 = 30,138.32/x
  3. Step 3: Cross multiply
    80,047.03x = 120,070.54 × 30,138.32
  4. Step 4: Simplify right side
    80,047.03x = 3,618,724,357.09
  5. Step 5: Solve for x
    x = 3,618,724,357.09/80,047.03
  6. Step 6: Final answer
    x = 45,207.48

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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.