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Finding the Fourth Proportional to 70,182.82, 105,242.96 and 20,251.05

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Solution

The fourth proportional to 70,182.82, 105,242.96 and 20,251.05 is: 30,367.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,182.82 : 105,242.96 = 20,251.05 : x
  2. Step 2: Convert to fraction form
    70,182.82/105,242.96 = 20,251.05/x
  3. Step 3: Cross multiply
    70,182.82x = 105,242.96 × 20,251.05
  4. Step 4: Simplify right side
    70,182.82x = 2,131,280,445.11
  5. Step 5: Solve for x
    x = 2,131,280,445.11/70,182.82
  6. Step 6: Final answer
    x = 30,367.55

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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.