Home / 85,314.24-117,724.32-60,120

Finding the Fourth Proportional to 85,314.24, 117,724.32 and 60,120

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Solution

The fourth proportional to 85,314.24, 117,724.32 and 60,120 is: 82,959.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,314.24 : 117,724.32 = 60,120 : x
  2. Step 2: Convert to fraction form
    85,314.24/117,724.32 = 60,120/x
  3. Step 3: Cross multiply
    85,314.24x = 117,724.32 × 60,120
  4. Step 4: Simplify right side
    85,314.24x = 7,077,586,118.40
  5. Step 5: Solve for x
    x = 7,077,586,118.40/85,314.24
  6. Step 6: Final answer
    x = 82,959.02

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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.