Home / 53,178.30-79,743.06-18,103.68

Finding the Fourth Proportional to 53,178.30, 79,743.06 and 18,103.68

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Solution

The fourth proportional to 53,178.30, 79,743.06 and 18,103.68 is: 27,147.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,178.30 : 79,743.06 = 18,103.68 : x
  2. Step 2: Convert to fraction form
    53,178.30/79,743.06 = 18,103.68/x
  3. Step 3: Cross multiply
    53,178.30x = 79,743.06 × 18,103.68
  4. Step 4: Simplify right side
    53,178.30x = 1,443,642,840.46
  5. Step 5: Solve for x
    x = 1,443,642,840.46/53,178.30
  6. Step 6: Final answer
    x = 27,147.22

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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.