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Finding the Fourth Proportional to 50,990.84, 76,474.72 and 19,389.60

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Solution

The fourth proportional to 50,990.84, 76,474.72 and 19,389.60 is: 29,080.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,990.84 : 76,474.72 = 19,389.60 : x
  2. Step 2: Convert to fraction form
    50,990.84/76,474.72 = 19,389.60/x
  3. Step 3: Cross multiply
    50,990.84x = 76,474.72 × 19,389.60
  4. Step 4: Simplify right side
    50,990.84x = 1,482,814,230.91
  5. Step 5: Solve for x
    x = 1,482,814,230.91/50,990.84
  6. Step 6: Final answer
    x = 29,080.01

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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.