Home / 53,128.75-79,680.37-15,678.71

Finding the Fourth Proportional to 53,128.75, 79,680.37 and 15,678.71

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Solution

The fourth proportional to 53,128.75, 79,680.37 and 15,678.71 is: 23,514.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,128.75 : 79,680.37 = 15,678.71 : x
  2. Step 2: Convert to fraction form
    53,128.75/79,680.37 = 15,678.71/x
  3. Step 3: Cross multiply
    53,128.75x = 79,680.37 × 15,678.71
  4. Step 4: Simplify right side
    53,128.75x = 1,249,285,413.92
  5. Step 5: Solve for x
    x = 1,249,285,413.92/53,128.75
  6. Step 6: Final answer
    x = 23,514.30

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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.