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Finding the Fourth Proportional to 65,040.96, 89,751.60 and 36,749.28

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Solution

The fourth proportional to 65,040.96, 89,751.60 and 36,749.28 is: 50,711.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,040.96 : 89,751.60 = 36,749.28 : x
  2. Step 2: Convert to fraction form
    65,040.96/89,751.60 = 36,749.28/x
  3. Step 3: Cross multiply
    65,040.96x = 89,751.60 × 36,749.28
  4. Step 4: Simplify right side
    65,040.96x = 3,298,306,678.85
  5. Step 5: Solve for x
    x = 3,298,306,678.85/65,040.96
  6. Step 6: Final answer
    x = 50,711.22

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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.