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Finding the Fourth Proportional to 103,728.80, 155,612.40 and 33,610.40

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Solution

The fourth proportional to 103,728.80, 155,612.40 and 33,610.40 is: 50,421.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,728.80 : 155,612.40 = 33,610.40 : x
  2. Step 2: Convert to fraction form
    103,728.80/155,612.40 = 33,610.40/x
  3. Step 3: Cross multiply
    103,728.80x = 155,612.40 × 33,610.40
  4. Step 4: Simplify right side
    103,728.80x = 5,230,195,008.96
  5. Step 5: Solve for x
    x = 5,230,195,008.96/103,728.80
  6. Step 6: Final answer
    x = 50,421.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.