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Finding the Fourth Proportional to 28,071.78, 42,106.98 and 8,350.50

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Solution

The fourth proportional to 28,071.78, 42,106.98 and 8,350.50 is: 12,525.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,071.78 : 42,106.98 = 8,350.50 : x
  2. Step 2: Convert to fraction form
    28,071.78/42,106.98 = 8,350.50/x
  3. Step 3: Cross multiply
    28,071.78x = 42,106.98 × 8,350.50
  4. Step 4: Simplify right side
    28,071.78x = 351,614,336.49
  5. Step 5: Solve for x
    x = 351,614,336.49/28,071.78
  6. Step 6: Final answer
    x = 12,525.54

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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.