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Finding the Fourth Proportional to 48,489.89, 72,734.84 and 13,429.55

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Solution

The fourth proportional to 48,489.89, 72,734.84 and 13,429.55 is: 20,144.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,489.89 : 72,734.84 = 13,429.55 : x
  2. Step 2: Convert to fraction form
    48,489.89/72,734.84 = 13,429.55/x
  3. Step 3: Cross multiply
    48,489.89x = 72,734.84 × 13,429.55
  4. Step 4: Simplify right side
    48,489.89x = 976,795,888.67
  5. Step 5: Solve for x
    x = 976,795,888.67/48,489.89
  6. Step 6: Final answer
    x = 20,144.32

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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.