Home / 51,489.82-71,047.74-28,829.76

Finding the Fourth Proportional to 51,489.82, 71,047.74 and 28,829.76

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Solution

The fourth proportional to 51,489.82, 71,047.74 and 28,829.76 is: 39,780.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,489.82 : 71,047.74 = 28,829.76 : x
  2. Step 2: Convert to fraction form
    51,489.82/71,047.74 = 28,829.76/x
  3. Step 3: Cross multiply
    51,489.82x = 71,047.74 × 28,829.76
  4. Step 4: Simplify right side
    51,489.82x = 2,048,289,292.74
  5. Step 5: Solve for x
    x = 2,048,289,292.74/51,489.82
  6. Step 6: Final answer
    x = 39,780.47

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.