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Finding the Fourth Proportional to 89,110.80, 133,702.20 and 39,200.40

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Solution

The fourth proportional to 89,110.80, 133,702.20 and 39,200.40 is: 58,816.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,110.80 : 133,702.20 = 39,200.40 : x
  2. Step 2: Convert to fraction form
    89,110.80/133,702.20 = 39,200.40/x
  3. Step 3: Cross multiply
    89,110.80x = 133,702.20 × 39,200.40
  4. Step 4: Simplify right side
    89,110.80x = 5,241,179,720.88
  5. Step 5: Solve for x
    x = 5,241,179,720.88/89,110.80
  6. Step 6: Final answer
    x = 58,816.44

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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.