Home / 49,821-68,749.53-28,020.54

Finding the Fourth Proportional to 49,821, 68,749.53 and 28,020.54

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Solution

The fourth proportional to 49,821, 68,749.53 and 28,020.54 is: 38,666.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,821 : 68,749.53 = 28,020.54 : x
  2. Step 2: Convert to fraction form
    49,821/68,749.53 = 28,020.54/x
  3. Step 3: Cross multiply
    49,821x = 68,749.53 × 28,020.54
  4. Step 4: Simplify right side
    49,821x = 1,926,398,955.35
  5. Step 5: Solve for x
    x = 1,926,398,955.35/49,821
  6. Step 6: Final answer
    x = 38,666.40

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1.5x scale

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.