Home / 72,278.35-108,359.08-30,190.67

Finding the Fourth Proportional to 72,278.35, 108,359.08 and 30,190.67

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Solution

The fourth proportional to 72,278.35, 108,359.08 and 30,190.67 is: 45,261.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,278.35 : 108,359.08 = 30,190.67 : x
  2. Step 2: Convert to fraction form
    72,278.35/108,359.08 = 30,190.67/x
  3. Step 3: Cross multiply
    72,278.35x = 108,359.08 × 30,190.67
  4. Step 4: Simplify right side
    72,278.35x = 3,271,433,225.78
  5. Step 5: Solve for x
    x = 3,271,433,225.78/72,278.35
  6. Step 6: Final answer
    x = 45,261.60

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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.