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Finding the Fourth Proportional to 115,702.75, 173,487.71 and 45,543.79

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Solution

The fourth proportional to 115,702.75, 173,487.71 and 45,543.79 is: 68,289.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,702.75 : 173,487.71 = 45,543.79 : x
  2. Step 2: Convert to fraction form
    115,702.75/173,487.71 = 45,543.79/x
  3. Step 3: Cross multiply
    115,702.75x = 173,487.71 × 45,543.79
  4. Step 4: Simplify right side
    115,702.75x = 7,901,287,604.10
  5. Step 5: Solve for x
    x = 7,901,287,604.10/115,702.75
  6. Step 6: Final answer
    x = 68,289.54

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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.