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Finding the Fourth Proportional to 71,340.30, 107,010.45 and 66,674.70

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Solution

The fourth proportional to 71,340.30, 107,010.45 and 66,674.70 is: 100,012.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,340.30 : 107,010.45 = 66,674.70 : x
  2. Step 2: Convert to fraction form
    71,340.30/107,010.45 = 66,674.70/x
  3. Step 3: Cross multiply
    71,340.30x = 107,010.45 × 66,674.70
  4. Step 4: Simplify right side
    71,340.30x = 7,134,889,650.62
  5. Step 5: Solve for x
    x = 7,134,889,650.62/71,340.30
  6. Step 6: Final answer
    x = 100,012.05

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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.