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Finding the Fourth Proportional to 64,206.60, 96,309.90 and 16,821.60

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Solution

The fourth proportional to 64,206.60, 96,309.90 and 16,821.60 is: 25,232.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,206.60 : 96,309.90 = 16,821.60 : x
  2. Step 2: Convert to fraction form
    64,206.60/96,309.90 = 16,821.60/x
  3. Step 3: Cross multiply
    64,206.60x = 96,309.90 × 16,821.60
  4. Step 4: Simplify right side
    64,206.60x = 1,620,086,613.84
  5. Step 5: Solve for x
    x = 1,620,086,613.84/64,206.60
  6. Step 6: Final answer
    x = 25,232.40

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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.