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Finding the Fourth Proportional to 69,668.01, 96,143.76 and 40,989.69

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Solution

The fourth proportional to 69,668.01, 96,143.76 and 40,989.69 is: 56,566.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,668.01 : 96,143.76 = 40,989.69 : x
  2. Step 2: Convert to fraction form
    69,668.01/96,143.76 = 40,989.69/x
  3. Step 3: Cross multiply
    69,668.01x = 96,143.76 × 40,989.69
  4. Step 4: Simplify right side
    69,668.01x = 3,940,902,917.83
  5. Step 5: Solve for x
    x = 3,940,902,917.83/69,668.01
  6. Step 6: Final answer
    x = 56,566.89

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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.