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Finding the Fourth Proportional to 70,620.05, 105,930.26 and 17,312.27

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Solution

The fourth proportional to 70,620.05, 105,930.26 and 17,312.27 is: 25,968.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,620.05 : 105,930.26 = 17,312.27 : x
  2. Step 2: Convert to fraction form
    70,620.05/105,930.26 = 17,312.27/x
  3. Step 3: Cross multiply
    70,620.05x = 105,930.26 × 17,312.27
  4. Step 4: Simplify right side
    70,620.05x = 1,833,892,646.08
  5. Step 5: Solve for x
    x = 1,833,892,646.08/70,620.05
  6. Step 6: Final answer
    x = 25,968.44

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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.