Home / 87,668.07-120,975.86-49,428.98

Finding the Fourth Proportional to 87,668.07, 120,975.86 and 49,428.98

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Solution

The fourth proportional to 87,668.07, 120,975.86 and 49,428.98 is: 68,208.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,668.07 : 120,975.86 = 49,428.98 : x
  2. Step 2: Convert to fraction form
    87,668.07/120,975.86 = 49,428.98/x
  3. Step 3: Cross multiply
    87,668.07x = 120,975.86 × 49,428.98
  4. Step 4: Simplify right side
    87,668.07x = 5,979,713,364.42
  5. Step 5: Solve for x
    x = 5,979,713,364.42/87,668.07
  6. Step 6: Final answer
    x = 68,208.57

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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.