Home / 80,732.82-121,129.98-36,349.37

Finding the Fourth Proportional to 80,732.82, 121,129.98 and 36,349.37

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Solution

The fourth proportional to 80,732.82, 121,129.98 and 36,349.37 is: 54,537.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,732.82 : 121,129.98 = 36,349.37 : x
  2. Step 2: Convert to fraction form
    80,732.82/121,129.98 = 36,349.37/x
  3. Step 3: Cross multiply
    80,732.82x = 121,129.98 × 36,349.37
  4. Step 4: Simplify right side
    80,732.82x = 4,402,997,855.46
  5. Step 5: Solve for x
    x = 4,402,997,855.46/80,732.82
  6. Step 6: Final answer
    x = 54,537.89

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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.