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Finding the Fourth Proportional to 70,893.50, 106,389.34 and 28,194.55

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Solution

The fourth proportional to 70,893.50, 106,389.34 and 28,194.55 is: 42,311.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,893.50 : 106,389.34 = 28,194.55 : x
  2. Step 2: Convert to fraction form
    70,893.50/106,389.34 = 28,194.55/x
  3. Step 3: Cross multiply
    70,893.50x = 106,389.34 × 28,194.55
  4. Step 4: Simplify right side
    70,893.50x = 2,999,599,229.64
  5. Step 5: Solve for x
    x = 2,999,599,229.64/70,893.50
  6. Step 6: Final answer
    x = 42,311.35

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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.