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Finding the Fourth Proportional to 51,607.92, 71,219.76 and 28,951.95

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Solution

The fourth proportional to 51,607.92, 71,219.76 and 28,951.95 is: 39,954.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,607.92 : 71,219.76 = 28,951.95 : x
  2. Step 2: Convert to fraction form
    51,607.92/71,219.76 = 28,951.95/x
  3. Step 3: Cross multiply
    51,607.92x = 71,219.76 × 28,951.95
  4. Step 4: Simplify right side
    51,607.92x = 2,061,950,930.53
  5. Step 5: Solve for x
    x = 2,061,950,930.53/51,607.92
  6. Step 6: Final answer
    x = 39,954.16

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Why These Related Problems?

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