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Finding the Fourth Proportional to 48,336.70, 72,447.45 and 20,256.70

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Solution

The fourth proportional to 48,336.70, 72,447.45 and 20,256.70 is: 30,360.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,336.70 : 72,447.45 = 20,256.70 : x
  2. Step 2: Convert to fraction form
    48,336.70/72,447.45 = 20,256.70/x
  3. Step 3: Cross multiply
    48,336.70x = 72,447.45 × 20,256.70
  4. Step 4: Simplify right side
    48,336.70x = 1,467,546,260.42
  5. Step 5: Solve for x
    x = 1,467,546,260.42/48,336.70
  6. Step 6: Final answer
    x = 30,360.91

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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.