Home / 53,128.41-79,674.03-15,678.51

Finding the Fourth Proportional to 53,128.41, 79,674.03 and 15,678.51

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Solution

The fourth proportional to 53,128.41, 79,674.03 and 15,678.51 is: 23,512.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,128.41 : 79,674.03 = 15,678.51 : x
  2. Step 2: Convert to fraction form
    53,128.41/79,674.03 = 15,678.51/x
  3. Step 3: Cross multiply
    53,128.41x = 79,674.03 × 15,678.51
  4. Step 4: Simplify right side
    53,128.41x = 1,249,170,076.10
  5. Step 5: Solve for x
    x = 1,249,170,076.10/53,128.41
  6. Step 6: Final answer
    x = 23,512.28

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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.