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Finding the Fourth Proportional to 70,367.79, 105,511.22 and 21,668.46

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Solution

The fourth proportional to 70,367.79, 105,511.22 and 21,668.46 is: 32,490.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,367.79 : 105,511.22 = 21,668.46 : x
  2. Step 2: Convert to fraction form
    70,367.79/105,511.22 = 21,668.46/x
  3. Step 3: Cross multiply
    70,367.79x = 105,511.22 × 21,668.46
  4. Step 4: Simplify right side
    70,367.79x = 2,286,265,650.12
  5. Step 5: Solve for x
    x = 2,286,265,650.12/70,367.79
  6. Step 6: Final answer
    x = 32,490.23

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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.