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Finding the Fourth Proportional to 72,501.94, 108,795.96 and 39,221.26

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Solution

The fourth proportional to 72,501.94, 108,795.96 and 39,221.26 is: 58,855.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,501.94 : 108,795.96 = 39,221.26 : x
  2. Step 2: Convert to fraction form
    72,501.94/108,795.96 = 39,221.26/x
  3. Step 3: Cross multiply
    72,501.94x = 108,795.96 × 39,221.26
  4. Step 4: Simplify right side
    72,501.94x = 4,267,114,974.10
  5. Step 5: Solve for x
    x = 4,267,114,974.10/72,501.94
  6. Step 6: Final answer
    x = 58,855.19

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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.