Home / 91,302.12-136,979.37-53,896.32

Finding the Fourth Proportional to 91,302.12, 136,979.37 and 53,896.32

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Solution

The fourth proportional to 91,302.12, 136,979.37 and 53,896.32 is: 80,859.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,302.12 : 136,979.37 = 53,896.32 : x
  2. Step 2: Convert to fraction form
    91,302.12/136,979.37 = 53,896.32/x
  3. Step 3: Cross multiply
    91,302.12x = 136,979.37 × 53,896.32
  4. Step 4: Simplify right side
    91,302.12x = 7,382,683,958.92
  5. Step 5: Solve for x
    x = 7,382,683,958.92/91,302.12
  6. Step 6: Final answer
    x = 80,859.94

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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.