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Finding the Fourth Proportional to 66,509.37, 91,794.33 and 63,519.93

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Solution

The fourth proportional to 66,509.37, 91,794.33 and 63,519.93 is: 87,668.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,509.37 : 91,794.33 = 63,519.93 : x
  2. Step 2: Convert to fraction form
    66,509.37/91,794.33 = 63,519.93/x
  3. Step 3: Cross multiply
    66,509.37x = 91,794.33 × 63,519.93
  4. Step 4: Simplify right side
    66,509.37x = 5,830,769,416.00
  5. Step 5: Solve for x
    x = 5,830,769,416.00/66,509.37
  6. Step 6: Final answer
    x = 87,668.39

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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.