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Finding the Fourth Proportional to 63,391.20, 94,971.60 and 51,640.80

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Solution

The fourth proportional to 63,391.20, 94,971.60 and 51,640.80 is: 77,367.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,391.20 : 94,971.60 = 51,640.80 : x
  2. Step 2: Convert to fraction form
    63,391.20/94,971.60 = 51,640.80/x
  3. Step 3: Cross multiply
    63,391.20x = 94,971.60 × 51,640.80
  4. Step 4: Simplify right side
    63,391.20x = 4,904,409,401.28
  5. Step 5: Solve for x
    x = 4,904,409,401.28/63,391.20
  6. Step 6: Final answer
    x = 77,367.35

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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.