Home / 65,739.47-90,664.58-55,580.04

Finding the Fourth Proportional to 65,739.47, 90,664.58 and 55,580.04

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Solution

The fourth proportional to 65,739.47, 90,664.58 and 55,580.04 is: 76,653.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,739.47 : 90,664.58 = 55,580.04 : x
  2. Step 2: Convert to fraction form
    65,739.47/90,664.58 = 55,580.04/x
  3. Step 3: Cross multiply
    65,739.47x = 90,664.58 × 55,580.04
  4. Step 4: Simplify right side
    65,739.47x = 5,039,141,121.93
  5. Step 5: Solve for x
    x = 5,039,141,121.93/65,739.47
  6. Step 6: Final answer
    x = 76,653.21

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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.