Home / 39,689.65-54,769.99-21,784.96

Finding the Fourth Proportional to 39,689.65, 54,769.99 and 21,784.96

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Solution

The fourth proportional to 39,689.65, 54,769.99 and 21,784.96 is: 30,062.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,689.65 : 54,769.99 = 21,784.96 : x
  2. Step 2: Convert to fraction form
    39,689.65/54,769.99 = 21,784.96/x
  3. Step 3: Cross multiply
    39,689.65x = 54,769.99 × 21,784.96
  4. Step 4: Simplify right side
    39,689.65x = 1,193,162,041.35
  5. Step 5: Solve for x
    x = 1,193,162,041.35/39,689.65
  6. Step 6: Final answer
    x = 30,062.30

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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.