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Finding the Fourth Proportional to 70,450.00, 105,673.14 and 20,543.87

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Solution

The fourth proportional to 70,450.00, 105,673.14 and 20,543.87 is: 30,815.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,450.00 : 105,673.14 = 20,543.87 : x
  2. Step 2: Convert to fraction form
    70,450.00/105,673.14 = 20,543.87/x
  3. Step 3: Cross multiply
    70,450.00x = 105,673.14 × 20,543.87
  4. Step 4: Simplify right side
    70,450.00x = 2,170,935,514.83
  5. Step 5: Solve for x
    x = 2,170,935,514.83/70,450.00
  6. Step 6: Final answer
    x = 30,815.27

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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.