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Finding the Fourth Proportional to 70,889.20, 106,333.96 and 66,558.96

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Solution

The fourth proportional to 70,889.20, 106,333.96 and 66,558.96 is: 99,838.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,889.20 : 106,333.96 = 66,558.96 : x
  2. Step 2: Convert to fraction form
    70,889.20/106,333.96 = 66,558.96/x
  3. Step 3: Cross multiply
    70,889.20x = 106,333.96 × 66,558.96
  4. Step 4: Simplify right side
    70,889.20x = 7,077,477,790.28
  5. Step 5: Solve for x
    x = 7,077,477,790.28/70,889.20
  6. Step 6: Final answer
    x = 99,838.59

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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.