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Finding the Fourth Proportional to 72,668.94, 100,282.62 and 40,837.15

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Solution

The fourth proportional to 72,668.94, 100,282.62 and 40,837.15 is: 56,354.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,668.94 : 100,282.62 = 40,837.15 : x
  2. Step 2: Convert to fraction form
    72,668.94/100,282.62 = 40,837.15/x
  3. Step 3: Cross multiply
    72,668.94x = 100,282.62 × 40,837.15
  4. Step 4: Simplify right side
    72,668.94x = 4,095,256,395.33
  5. Step 5: Solve for x
    x = 4,095,256,395.33/72,668.94
  6. Step 6: Final answer
    x = 56,354.98

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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.