Home / 53,128.69-79,680.27-15,678.64

Finding the Fourth Proportional to 53,128.69, 79,680.27 and 15,678.64

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Solution

The fourth proportional to 53,128.69, 79,680.27 and 15,678.64 is: 23,514.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,128.69 : 79,680.27 = 15,678.64 : x
  2. Step 2: Convert to fraction form
    53,128.69/79,680.27 = 15,678.64/x
  3. Step 3: Cross multiply
    53,128.69x = 79,680.27 × 15,678.64
  4. Step 4: Simplify right side
    53,128.69x = 1,249,278,268.43
  5. Step 5: Solve for x
    x = 1,249,278,268.43/53,128.69
  6. Step 6: Final answer
    x = 23,514.19

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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.