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Finding the Fourth Proportional to 89,813.85, 134,720.75 and 30,649.52

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Solution

The fourth proportional to 89,813.85, 134,720.75 and 30,649.52 is: 45,974.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,813.85 : 134,720.75 = 30,649.52 : x
  2. Step 2: Convert to fraction form
    89,813.85/134,720.75 = 30,649.52/x
  3. Step 3: Cross multiply
    89,813.85x = 134,720.75 × 30,649.52
  4. Step 4: Simplify right side
    89,813.85x = 4,129,125,494.69
  5. Step 5: Solve for x
    x = 4,129,125,494.69/89,813.85
  6. Step 6: Final answer
    x = 45,974.26

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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.