Home / 91,709.61-126,556.62-55,886.55

Finding the Fourth Proportional to 91,709.61, 126,556.62 and 55,886.55

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Solution

The fourth proportional to 91,709.61, 126,556.62 and 55,886.55 is: 77,121.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,709.61 : 126,556.62 = 55,886.55 : x
  2. Step 2: Convert to fraction form
    91,709.61/126,556.62 = 55,886.55/x
  3. Step 3: Cross multiply
    91,709.61x = 126,556.62 × 55,886.55
  4. Step 4: Simplify right side
    91,709.61x = 7,072,812,238.68
  5. Step 5: Solve for x
    x = 7,072,812,238.68/91,709.61
  6. Step 6: Final answer
    x = 77,121.83

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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.