Home / 53,119.92-79,672.14-15,678.15

Finding the Fourth Proportional to 53,119.92, 79,672.14 and 15,678.15

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Solution

The fourth proportional to 53,119.92, 79,672.14 and 15,678.15 is: 23,514.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,119.92 : 79,672.14 = 15,678.15 : x
  2. Step 2: Convert to fraction form
    53,119.92/79,672.14 = 15,678.15/x
  3. Step 3: Cross multiply
    53,119.92x = 79,672.14 × 15,678.15
  4. Step 4: Simplify right side
    53,119.92x = 1,249,111,761.74
  5. Step 5: Solve for x
    x = 1,249,111,761.74/53,119.92
  6. Step 6: Final answer
    x = 23,514.94

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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.