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Finding the Fourth Proportional to 36,800.60, 50,801.92 and 21,688.16

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Solution

The fourth proportional to 36,800.60, 50,801.92 and 21,688.16 is: 29,939.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,800.60 : 50,801.92 = 21,688.16 : x
  2. Step 2: Convert to fraction form
    36,800.60/50,801.92 = 21,688.16/x
  3. Step 3: Cross multiply
    36,800.60x = 50,801.92 × 21,688.16
  4. Step 4: Simplify right side
    36,800.60x = 1,101,799,861.04
  5. Step 5: Solve for x
    x = 1,101,799,861.04/36,800.60
  6. Step 6: Final answer
    x = 29,939.73

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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.