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Finding the Fourth Proportional to 32,751.12, 45,200.80 and 20,001.60

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Solution

The fourth proportional to 32,751.12, 45,200.80 and 20,001.60 is: 27,604.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,751.12 : 45,200.80 = 20,001.60 : x
  2. Step 2: Convert to fraction form
    32,751.12/45,200.80 = 20,001.60/x
  3. Step 3: Cross multiply
    32,751.12x = 45,200.80 × 20,001.60
  4. Step 4: Simplify right side
    32,751.12x = 904,088,321.28
  5. Step 5: Solve for x
    x = 904,088,321.28/32,751.12
  6. Step 6: Final answer
    x = 27,604.81

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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.