Home / 72,279.35-108,360.58-30,191.67

Finding the Fourth Proportional to 72,279.35, 108,360.58 and 30,191.67

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Solution

The fourth proportional to 72,279.35, 108,360.58 and 30,191.67 is: 45,263.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,279.35 : 108,360.58 = 30,191.67 : x
  2. Step 2: Convert to fraction form
    72,279.35/108,360.58 = 30,191.67/x
  3. Step 3: Cross multiply
    72,279.35x = 108,360.58 × 30,191.67
  4. Step 4: Simplify right side
    72,279.35x = 3,271,586,872.37
  5. Step 5: Solve for x
    x = 3,271,586,872.37/72,279.35
  6. Step 6: Final answer
    x = 45,263.10

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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.