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Finding the Fourth Proportional to 48,302.60, 72,453.90 and 20,217.80

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Solution

The fourth proportional to 48,302.60, 72,453.90 and 20,217.80 is: 30,326.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,302.60 : 72,453.90 = 20,217.80 : x
  2. Step 2: Convert to fraction form
    48,302.60/72,453.90 = 20,217.80/x
  3. Step 3: Cross multiply
    48,302.60x = 72,453.90 × 20,217.80
  4. Step 4: Simplify right side
    48,302.60x = 1,464,858,459.42
  5. Step 5: Solve for x
    x = 1,464,858,459.42/48,302.60
  6. Step 6: Final answer
    x = 30,326.70

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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.