Home / 91,725.75-137,636.73-66,632.58

Finding the Fourth Proportional to 91,725.75, 137,636.73 and 66,632.58

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Solution

The fourth proportional to 91,725.75, 137,636.73 and 66,632.58 is: 99,983.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,725.75 : 137,636.73 = 66,632.58 : x
  2. Step 2: Convert to fraction form
    91,725.75/137,636.73 = 66,632.58/x
  3. Step 3: Cross multiply
    91,725.75x = 137,636.73 × 66,632.58
  4. Step 4: Simplify right side
    91,725.75x = 9,171,090,422.66
  5. Step 5: Solve for x
    x = 9,171,090,422.66/91,725.75
  6. Step 6: Final answer
    x = 99,983.82

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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.