Home / 85,739.60-128,589.24-23,395.28

Finding the Fourth Proportional to 85,739.60, 128,589.24 and 23,395.28

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Solution

The fourth proportional to 85,739.60, 128,589.24 and 23,395.28 is: 35,087.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,739.60 : 128,589.24 = 23,395.28 : x
  2. Step 2: Convert to fraction form
    85,739.60/128,589.24 = 23,395.28/x
  3. Step 3: Cross multiply
    85,739.60x = 128,589.24 × 23,395.28
  4. Step 4: Simplify right side
    85,739.60x = 3,008,381,274.79
  5. Step 5: Solve for x
    x = 3,008,381,274.79/85,739.60
  6. Step 6: Final answer
    x = 35,087.42

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.