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Finding the Fourth Proportional to 80,636.16, 120,839.70 and 59,409.30

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Solution

The fourth proportional to 80,636.16, 120,839.70 and 59,409.30 is: 89,029.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,636.16 : 120,839.70 = 59,409.30 : x
  2. Step 2: Convert to fraction form
    80,636.16/120,839.70 = 59,409.30/x
  3. Step 3: Cross multiply
    80,636.16x = 120,839.70 × 59,409.30
  4. Step 4: Simplify right side
    80,636.16x = 7,179,001,651.24
  5. Step 5: Solve for x
    x = 7,179,001,651.24/80,636.16
  6. Step 6: Final answer
    x = 89,029.56

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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.