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Finding the Fourth Proportional to 80,200.05, 120,300.08 and 21,041.70

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Solution

The fourth proportional to 80,200.05, 120,300.08 and 21,041.70 is: 31,562.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,200.05 : 120,300.08 = 21,041.70 : x
  2. Step 2: Convert to fraction form
    80,200.05/120,300.08 = 21,041.70/x
  3. Step 3: Cross multiply
    80,200.05x = 120,300.08 × 21,041.70
  4. Step 4: Simplify right side
    80,200.05x = 2,531,318,088.13
  5. Step 5: Solve for x
    x = 2,531,318,088.13/80,200.05
  6. Step 6: Final answer
    x = 31,562.55

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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.