Home / 51,748.80-77,556.18-21,729

Finding the Fourth Proportional to 51,748.80, 77,556.18 and 21,729

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Solution

The fourth proportional to 51,748.80, 77,556.18 and 21,729 is: 32,565.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,748.80 : 77,556.18 = 21,729 : x
  2. Step 2: Convert to fraction form
    51,748.80/77,556.18 = 21,729/x
  3. Step 3: Cross multiply
    51,748.80x = 77,556.18 × 21,729
  4. Step 4: Simplify right side
    51,748.80x = 1,685,218,235.22
  5. Step 5: Solve for x
    x = 1,685,218,235.22/51,748.80
  6. Step 6: Final answer
    x = 32,565.36

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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.