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Finding the Fourth Proportional to 79,677.68, 119,506.72 and 20,513.68

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Solution

The fourth proportional to 79,677.68, 119,506.72 and 20,513.68 is: 30,768.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,677.68 : 119,506.72 = 20,513.68 : x
  2. Step 2: Convert to fraction form
    79,677.68/119,506.72 = 20,513.68/x
  3. Step 3: Cross multiply
    79,677.68x = 119,506.72 × 20,513.68
  4. Step 4: Simplify right side
    79,677.68x = 2,451,522,611.93
  5. Step 5: Solve for x
    x = 2,451,522,611.93/79,677.68
  6. Step 6: Final answer
    x = 30,768.00

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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.