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Finding the Fourth Proportional to 32,190.80, 48,415.80 and 28,821.20

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Solution

The fourth proportional to 32,190.80, 48,415.80 and 28,821.20 is: 43,347.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,190.80 : 48,415.80 = 28,821.20 : x
  2. Step 2: Convert to fraction form
    32,190.80/48,415.80 = 28,821.20/x
  3. Step 3: Cross multiply
    32,190.80x = 48,415.80 × 28,821.20
  4. Step 4: Simplify right side
    32,190.80x = 1,395,401,454.96
  5. Step 5: Solve for x
    x = 1,395,401,454.96/32,190.80
  6. Step 6: Final answer
    x = 43,347.83

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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.