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Finding the Fourth Proportional to 72,308.40, 108,383.40 and 25,537.20

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Solution

The fourth proportional to 72,308.40, 108,383.40 and 25,537.20 is: 38,277.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,308.40 : 108,383.40 = 25,537.20 : x
  2. Step 2: Convert to fraction form
    72,308.40/108,383.40 = 25,537.20/x
  3. Step 3: Cross multiply
    72,308.40x = 108,383.40 × 25,537.20
  4. Step 4: Simplify right side
    72,308.40x = 2,767,808,562.48
  5. Step 5: Solve for x
    x = 2,767,808,562.48/72,308.40
  6. Step 6: Final answer
    x = 38,277.83

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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.