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Finding the Fourth Proportional to 70,930.98, 106,412.04 and 21,014.98

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Solution

The fourth proportional to 70,930.98, 106,412.04 and 21,014.98 is: 31,527.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,930.98 : 106,412.04 = 21,014.98 : x
  2. Step 2: Convert to fraction form
    70,930.98/106,412.04 = 21,014.98/x
  3. Step 3: Cross multiply
    70,930.98x = 106,412.04 × 21,014.98
  4. Step 4: Simplify right side
    70,930.98x = 2,236,246,626.33
  5. Step 5: Solve for x
    x = 2,236,246,626.33/70,930.98
  6. Step 6: Final answer
    x = 31,527.08

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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.