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Finding the Fourth Proportional to 66,364, 91,582.32 and 36,556

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Solution

The fourth proportional to 66,364, 91,582.32 and 36,556 is: 50,447.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,364 : 91,582.32 = 36,556 : x
  2. Step 2: Convert to fraction form
    66,364/91,582.32 = 36,556/x
  3. Step 3: Cross multiply
    66,364x = 91,582.32 × 36,556
  4. Step 4: Simplify right side
    66,364x = 3,347,883,289.92
  5. Step 5: Solve for x
    x = 3,347,883,289.92/66,364
  6. Step 6: Final answer
    x = 50,447.28

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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.