Home / 39,869.20-55,009.56-25,705

Finding the Fourth Proportional to 39,869.20, 55,009.56 and 25,705

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Solution

The fourth proportional to 39,869.20, 55,009.56 and 25,705 is: 35,466.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,869.20 : 55,009.56 = 25,705 : x
  2. Step 2: Convert to fraction form
    39,869.20/55,009.56 = 25,705/x
  3. Step 3: Cross multiply
    39,869.20x = 55,009.56 × 25,705
  4. Step 4: Simplify right side
    39,869.20x = 1,414,020,739.80
  5. Step 5: Solve for x
    x = 1,414,020,739.80/39,869.20
  6. Step 6: Final answer
    x = 35,466.49

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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.