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Finding the Fourth Proportional to 72,325.26, 99,809.01 and 40,495.50

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Solution

The fourth proportional to 72,325.26, 99,809.01 and 40,495.50 is: 55,883.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,325.26 : 99,809.01 = 40,495.50 : x
  2. Step 2: Convert to fraction form
    72,325.26/99,809.01 = 40,495.50/x
  3. Step 3: Cross multiply
    72,325.26x = 99,809.01 × 40,495.50
  4. Step 4: Simplify right side
    72,325.26x = 4,041,815,764.46
  5. Step 5: Solve for x
    x = 4,041,815,764.46/72,325.26
  6. Step 6: Final answer
    x = 55,883.87

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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.