Home / 65,308.28-90,135.45-36,639.54

Finding the Fourth Proportional to 65,308.28, 90,135.45 and 36,639.54

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Solution

The fourth proportional to 65,308.28, 90,135.45 and 36,639.54 is: 50,568.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,308.28 : 90,135.45 = 36,639.54 : x
  2. Step 2: Convert to fraction form
    65,308.28/90,135.45 = 36,639.54/x
  3. Step 3: Cross multiply
    65,308.28x = 90,135.45 × 36,639.54
  4. Step 4: Simplify right side
    65,308.28x = 3,302,521,425.69
  5. Step 5: Solve for x
    x = 3,302,521,425.69/65,308.28
  6. Step 6: Final answer
    x = 50,568.19

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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.