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Finding the Fourth Proportional to 72,960.57, 109,440.89 and 17,556.57

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Solution

The fourth proportional to 72,960.57, 109,440.89 and 17,556.57 is: 26,334.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,960.57 : 109,440.89 = 17,556.57 : x
  2. Step 2: Convert to fraction form
    72,960.57/109,440.89 = 17,556.57/x
  3. Step 3: Cross multiply
    72,960.57x = 109,440.89 × 17,556.57
  4. Step 4: Simplify right side
    72,960.57x = 1,921,406,558.36
  5. Step 5: Solve for x
    x = 1,921,406,558.36/72,960.57
  6. Step 6: Final answer
    x = 26,334.86

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Similar ratio
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1.5x scale

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.