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Finding the Fourth Proportional to 79,988.58, 120,000.29 and 27,399.33

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Solution

The fourth proportional to 79,988.58, 120,000.29 and 27,399.33 is: 41,104.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,988.58 : 120,000.29 = 27,399.33 : x
  2. Step 2: Convert to fraction form
    79,988.58/120,000.29 = 27,399.33/x
  3. Step 3: Cross multiply
    79,988.58x = 120,000.29 × 27,399.33
  4. Step 4: Simplify right side
    79,988.58x = 3,287,927,408.81
  5. Step 5: Solve for x
    x = 3,287,927,408.81/79,988.58
  6. Step 6: Final answer
    x = 41,104.96

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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.