Home / 74,471,709.40-111,707,564.10-20,619,021.40

Finding the Fourth Proportional to 74,471,709.40, 111,707,564.10 and 20,619,021.40

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Solution

The fourth proportional to 74,471,709.40, 111,707,564.10 and 20,619,021.40 is: 30,928,532.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,471,709.40 : 111,707,564.10 = 20,619,021.40 : x
  2. Step 2: Convert to fraction form
    74,471,709.40/111,707,564.10 = 20,619,021.40/x
  3. Step 3: Cross multiply
    74,471,709.40x = 111,707,564.10 × 20,619,021.40
  4. Step 4: Simplify right side
    74,471,709.40x = 2,303,300,654,719,771.50
  5. Step 5: Solve for x
    x = 2,303,300,654,719,771.50/74,471,709.40
  6. Step 6: Final answer
    x = 30,928,532.10

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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.