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Finding the Fourth Proportional to 72,087.68, 108,137.12 and 19,497.44

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Solution

The fourth proportional to 72,087.68, 108,137.12 and 19,497.44 is: 29,247.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,087.68 : 108,137.12 = 19,497.44 : x
  2. Step 2: Convert to fraction form
    72,087.68/108,137.12 = 19,497.44/x
  3. Step 3: Cross multiply
    72,087.68x = 108,137.12 × 19,497.44
  4. Step 4: Simplify right side
    72,087.68x = 2,108,397,008.97
  5. Step 5: Solve for x
    x = 2,108,397,008.97/72,087.68
  6. Step 6: Final answer
    x = 29,247.67

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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.