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Finding the Fourth Proportional to 48,149.20, 72,245.40 and 21,840.40

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Solution

The fourth proportional to 48,149.20, 72,245.40 and 21,840.40 is: 32,770.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,149.20 : 72,245.40 = 21,840.40 : x
  2. Step 2: Convert to fraction form
    48,149.20/72,245.40 = 21,840.40/x
  3. Step 3: Cross multiply
    48,149.20x = 72,245.40 × 21,840.40
  4. Step 4: Simplify right side
    48,149.20x = 1,577,868,434.16
  5. Step 5: Solve for x
    x = 1,577,868,434.16/48,149.20
  6. Step 6: Final answer
    x = 32,770.40

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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.