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Finding the Fourth Proportional to 91,950.69, 126,598.62 and 78,467.85

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Solution

The fourth proportional to 91,950.69, 126,598.62 and 78,467.85 is: 108,035.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,950.69 : 126,598.62 = 78,467.85 : x
  2. Step 2: Convert to fraction form
    91,950.69/126,598.62 = 78,467.85/x
  3. Step 3: Cross multiply
    91,950.69x = 126,598.62 × 78,467.85
  4. Step 4: Simplify right side
    91,950.69x = 9,933,921,524.37
  5. Step 5: Solve for x
    x = 9,933,921,524.37/91,950.69
  6. Step 6: Final answer
    x = 108,035.31

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1.5x scale

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.