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Finding the Fourth Proportional to 48,704.40, 72,910.80 and 45,820.80

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Solution

The fourth proportional to 48,704.40, 72,910.80 and 45,820.80 is: 68,594.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,704.40 : 72,910.80 = 45,820.80 : x
  2. Step 2: Convert to fraction form
    48,704.40/72,910.80 = 45,820.80/x
  3. Step 3: Cross multiply
    48,704.40x = 72,910.80 × 45,820.80
  4. Step 4: Simplify right side
    48,704.40x = 3,340,831,184.64
  5. Step 5: Solve for x
    x = 3,340,831,184.64/48,704.40
  6. Step 6: Final answer
    x = 68,594.03

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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.