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Finding the Fourth Proportional to 36,681.60, 50,620.76 and 20,769.12

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Solution

The fourth proportional to 36,681.60, 50,620.76 and 20,769.12 is: 28,661.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,681.60 : 50,620.76 = 20,769.12 : x
  2. Step 2: Convert to fraction form
    36,681.60/50,620.76 = 20,769.12/x
  3. Step 3: Cross multiply
    36,681.60x = 50,620.76 × 20,769.12
  4. Step 4: Simplify right side
    36,681.60x = 1,051,348,638.93
  5. Step 5: Solve for x
    x = 1,051,348,638.93/36,681.60
  6. Step 6: Final answer
    x = 28,661.47

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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.