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Finding the Fourth Proportional to 67,125.87, 100,674.62 and 19,728.10

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Solution

The fourth proportional to 67,125.87, 100,674.62 and 19,728.10 is: 29,587.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,125.87 : 100,674.62 = 19,728.10 : x
  2. Step 2: Convert to fraction form
    67,125.87/100,674.62 = 19,728.10/x
  3. Step 3: Cross multiply
    67,125.87x = 100,674.62 × 19,728.10
  4. Step 4: Simplify right side
    67,125.87x = 1,986,119,072.01
  5. Step 5: Solve for x
    x = 1,986,119,072.01/67,125.87
  6. Step 6: Final answer
    x = 29,587.98

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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.