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Finding the Fourth Proportional to 48,671.82, 72,992.61 and 20,591.40

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Solution

The fourth proportional to 48,671.82, 72,992.61 and 20,591.40 is: 30,880.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,671.82 : 72,992.61 = 20,591.40 : x
  2. Step 2: Convert to fraction form
    48,671.82/72,992.61 = 20,591.40/x
  3. Step 3: Cross multiply
    48,671.82x = 72,992.61 × 20,591.40
  4. Step 4: Simplify right side
    48,671.82x = 1,503,020,029.55
  5. Step 5: Solve for x
    x = 1,503,020,029.55/48,671.82
  6. Step 6: Final answer
    x = 30,880.70

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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.