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Finding the Fourth Proportional to 79,990.34, 119,986.14 and 27,400.28

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Solution

The fourth proportional to 79,990.34, 119,986.14 and 27,400.28 is: 41,100.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,990.34 : 119,986.14 = 27,400.28 : x
  2. Step 2: Convert to fraction form
    79,990.34/119,986.14 = 27,400.28/x
  3. Step 3: Cross multiply
    79,990.34x = 119,986.14 × 27,400.28
  4. Step 4: Simplify right side
    79,990.34x = 3,287,653,832.12
  5. Step 5: Solve for x
    x = 3,287,653,832.12/79,990.34
  6. Step 6: Final answer
    x = 41,100.64

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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.