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Finding the Fourth Proportional to 35,289.60, 48,700.80 and 20,176.80

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Solution

The fourth proportional to 35,289.60, 48,700.80 and 20,176.80 is: 27,844.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,289.60 : 48,700.80 = 20,176.80 : x
  2. Step 2: Convert to fraction form
    35,289.60/48,700.80 = 20,176.80/x
  3. Step 3: Cross multiply
    35,289.60x = 48,700.80 × 20,176.80
  4. Step 4: Simplify right side
    35,289.60x = 982,626,301.44
  5. Step 5: Solve for x
    x = 982,626,301.44/35,289.60
  6. Step 6: Final answer
    x = 27,844.64

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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.