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Finding the Fourth Proportional to 72,377.50, 99,880.95 and 40,546.39

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Solution

The fourth proportional to 72,377.50, 99,880.95 and 40,546.39 is: 55,954.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,377.50 : 99,880.95 = 40,546.39 : x
  2. Step 2: Convert to fraction form
    72,377.50/99,880.95 = 40,546.39/x
  3. Step 3: Cross multiply
    72,377.50x = 99,880.95 × 40,546.39
  4. Step 4: Simplify right side
    72,377.50x = 4,049,811,952.27
  5. Step 5: Solve for x
    x = 4,049,811,952.27/72,377.50
  6. Step 6: Final answer
    x = 55,954.02

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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.