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Finding the Fourth Proportional to 30,644.87, 45,968.85 and 8,457.75

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Solution

The fourth proportional to 30,644.87, 45,968.85 and 8,457.75 is: 12,687.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,644.87 : 45,968.85 = 8,457.75 : x
  2. Step 2: Convert to fraction form
    30,644.87/45,968.85 = 8,457.75/x
  3. Step 3: Cross multiply
    30,644.87x = 45,968.85 × 8,457.75
  4. Step 4: Simplify right side
    30,644.87x = 388,793,041.09
  5. Step 5: Solve for x
    x = 388,793,041.09/30,644.87
  6. Step 6: Final answer
    x = 12,687.05

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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.