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Finding the Fourth Proportional to 70,890.80, 106,336.19 and 20,967.01

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Solution

The fourth proportional to 70,890.80, 106,336.19 and 20,967.01 is: 31,450.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,890.80 : 106,336.19 = 20,967.01 : x
  2. Step 2: Convert to fraction form
    70,890.80/106,336.19 = 20,967.01/x
  3. Step 3: Cross multiply
    70,890.80x = 106,336.19 × 20,967.01
  4. Step 4: Simplify right side
    70,890.80x = 2,229,551,322.58
  5. Step 5: Solve for x
    x = 2,229,551,322.58/70,890.80
  6. Step 6: Final answer
    x = 31,450.51

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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.