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Finding the Fourth Proportional to 70,000.56, 105,006.11 and 20,080.26

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Solution

The fourth proportional to 70,000.56, 105,006.11 and 20,080.26 is: 30,121.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,000.56 : 105,006.11 = 20,080.26 : x
  2. Step 2: Convert to fraction form
    70,000.56/105,006.11 = 20,080.26/x
  3. Step 3: Cross multiply
    70,000.56x = 105,006.11 × 20,080.26
  4. Step 4: Simplify right side
    70,000.56x = 2,108,549,889.99
  5. Step 5: Solve for x
    x = 2,108,549,889.99/70,000.56
  6. Step 6: Final answer
    x = 30,121.90

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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.