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Finding the Fourth Proportional to 128,532.51, 192,779.73 and 49,636.89

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Solution

The fourth proportional to 128,532.51, 192,779.73 and 49,636.89 is: 74,447.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,532.51 : 192,779.73 = 49,636.89 : x
  2. Step 2: Convert to fraction form
    128,532.51/192,779.73 = 49,636.89/x
  3. Step 3: Cross multiply
    128,532.51x = 192,779.73 × 49,636.89
  4. Step 4: Simplify right side
    128,532.51x = 9,568,986,252.24
  5. Step 5: Solve for x
    x = 9,568,986,252.24/128,532.51
  6. Step 6: Final answer
    x = 74,447.98

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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.