Home / 72,861.45-109,306.91-30,741.64

Finding the Fourth Proportional to 72,861.45, 109,306.91 and 30,741.64

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Solution

The fourth proportional to 72,861.45, 109,306.91 and 30,741.64 is: 46,118.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,861.45 : 109,306.91 = 30,741.64 : x
  2. Step 2: Convert to fraction form
    72,861.45/109,306.91 = 30,741.64/x
  3. Step 3: Cross multiply
    72,861.45x = 109,306.91 × 30,741.64
  4. Step 4: Simplify right side
    72,861.45x = 3,360,273,307.40
  5. Step 5: Solve for x
    x = 3,360,273,307.40/72,861.45
  6. Step 6: Final answer
    x = 46,118.67

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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.