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Finding the Fourth Proportional to 52,636.63, 72,637.69 and 28,762.80

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Solution

The fourth proportional to 52,636.63, 72,637.69 and 28,762.80 is: 39,692.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,636.63 : 72,637.69 = 28,762.80 : x
  2. Step 2: Convert to fraction form
    52,636.63/72,637.69 = 28,762.80/x
  3. Step 3: Cross multiply
    52,636.63x = 72,637.69 × 28,762.80
  4. Step 4: Simplify right side
    52,636.63x = 2,089,263,349.93
  5. Step 5: Solve for x
    x = 2,089,263,349.93/52,636.63
  6. Step 6: Final answer
    x = 39,692.19

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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.