Home / 85,315.24-117,725.70-60,121

Finding the Fourth Proportional to 85,315.24, 117,725.70 and 60,121

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Solution

The fourth proportional to 85,315.24, 117,725.70 and 60,121 is: 82,960.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,315.24 : 117,725.70 = 60,121 : x
  2. Step 2: Convert to fraction form
    85,315.24/117,725.70 = 60,121/x
  3. Step 3: Cross multiply
    85,315.24x = 117,725.70 × 60,121
  4. Step 4: Simplify right side
    85,315.24x = 7,077,786,809.70
  5. Step 5: Solve for x
    x = 7,077,786,809.70/85,315.24
  6. Step 6: Final answer
    x = 82,960.40

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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.