Home / 72,448.09-108,659.68-19,140.64

Finding the Fourth Proportional to 72,448.09, 108,659.68 and 19,140.64

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Solution

The fourth proportional to 72,448.09, 108,659.68 and 19,140.64 is: 28,707.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,448.09 : 108,659.68 = 19,140.64 : x
  2. Step 2: Convert to fraction form
    72,448.09/108,659.68 = 19,140.64/x
  3. Step 3: Cross multiply
    72,448.09x = 108,659.68 × 19,140.64
  4. Step 4: Simplify right side
    72,448.09x = 2,079,815,497.89
  5. Step 5: Solve for x
    x = 2,079,815,497.89/72,448.09
  6. Step 6: Final answer
    x = 28,707.67

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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.