Home / 67,135.55-100,730.69-43,146.72

Finding the Fourth Proportional to 67,135.55, 100,730.69 and 43,146.72

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Solution

The fourth proportional to 67,135.55, 100,730.69 and 43,146.72 is: 64,737.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,135.55 : 100,730.69 = 43,146.72 : x
  2. Step 2: Convert to fraction form
    67,135.55/100,730.69 = 43,146.72/x
  3. Step 3: Cross multiply
    67,135.55x = 100,730.69 × 43,146.72
  4. Step 4: Simplify right side
    67,135.55x = 4,346,198,876.84
  5. Step 5: Solve for x
    x = 4,346,198,876.84/67,135.55
  6. Step 6: Final answer
    x = 64,737.67

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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.