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Finding the Fourth Proportional to 52,636.77, 72,639.79 and 28,764.92

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Solution

The fourth proportional to 52,636.77, 72,639.79 and 28,764.92 is: 39,696.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,636.77 : 72,639.79 = 28,764.92 : x
  2. Step 2: Convert to fraction form
    52,636.77/72,639.79 = 28,764.92/x
  3. Step 3: Cross multiply
    52,636.77x = 72,639.79 × 28,764.92
  4. Step 4: Simplify right side
    52,636.77x = 2,089,477,857.85
  5. Step 5: Solve for x
    x = 2,089,477,857.85/52,636.77
  6. Step 6: Final answer
    x = 39,696.16

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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.