Home / 53,128.44-79,679.90-15,678.39

Finding the Fourth Proportional to 53,128.44, 79,679.90 and 15,678.39

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Solution

The fourth proportional to 53,128.44, 79,679.90 and 15,678.39 is: 23,513.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,128.44 : 79,679.90 = 15,678.39 : x
  2. Step 2: Convert to fraction form
    53,128.44/79,679.90 = 15,678.39/x
  3. Step 3: Cross multiply
    53,128.44x = 79,679.90 × 15,678.39
  4. Step 4: Simplify right side
    53,128.44x = 1,249,252,468.97
  5. Step 5: Solve for x
    x = 1,249,252,468.97/53,128.44
  6. Step 6: Final answer
    x = 23,513.82

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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.