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Finding the Fourth Proportional to 47,472.35, 65,511.50 and 28,360.80

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Solution

The fourth proportional to 47,472.35, 65,511.50 and 28,360.80 is: 39,137.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,472.35 : 65,511.50 = 28,360.80 : x
  2. Step 2: Convert to fraction form
    47,472.35/65,511.50 = 28,360.80/x
  3. Step 3: Cross multiply
    47,472.35x = 65,511.50 × 28,360.80
  4. Step 4: Simplify right side
    47,472.35x = 1,857,958,407.40
  5. Step 5: Solve for x
    x = 1,857,958,407.40/47,472.35
  6. Step 6: Final answer
    x = 39,137.70

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.