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Finding the Fourth Proportional to 48,122.80, 72,135.60 and 21,846.40

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Solution

The fourth proportional to 48,122.80, 72,135.60 and 21,846.40 is: 32,747.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,122.80 : 72,135.60 = 21,846.40 : x
  2. Step 2: Convert to fraction form
    48,122.80/72,135.60 = 21,846.40/x
  3. Step 3: Cross multiply
    48,122.80x = 72,135.60 × 21,846.40
  4. Step 4: Simplify right side
    48,122.80x = 1,575,903,171.84
  5. Step 5: Solve for x
    x = 1,575,903,171.84/48,122.80
  6. Step 6: Final answer
    x = 32,747.54

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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.