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Finding the Fourth Proportional to 48,133.20, 72,199.20 and 21,819.60

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Solution

The fourth proportional to 48,133.20, 72,199.20 and 21,819.60 is: 32,729.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,133.20 : 72,199.20 = 21,819.60 : x
  2. Step 2: Convert to fraction form
    48,133.20/72,199.20 = 21,819.60/x
  3. Step 3: Cross multiply
    48,133.20x = 72,199.20 × 21,819.60
  4. Step 4: Simplify right side
    48,133.20x = 1,575,357,664.32
  5. Step 5: Solve for x
    x = 1,575,357,664.32/48,133.20
  6. Step 6: Final answer
    x = 32,729.13

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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.