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Finding the Fourth Proportional to 53,960.70, 80,811.45 and 51,627.90

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Solution

The fourth proportional to 53,960.70, 80,811.45 and 51,627.90 is: 77,317.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,960.70 : 80,811.45 = 51,627.90 : x
  2. Step 2: Convert to fraction form
    53,960.70/80,811.45 = 51,627.90/x
  3. Step 3: Cross multiply
    53,960.70x = 80,811.45 × 51,627.90
  4. Step 4: Simplify right side
    53,960.70x = 4,172,125,459.46
  5. Step 5: Solve for x
    x = 4,172,125,459.46/53,960.70
  6. Step 6: Final answer
    x = 77,317.85

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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.