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Finding the Fourth Proportional to 65,508.28, 90,390.54 and 37,203.64

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Solution

The fourth proportional to 65,508.28, 90,390.54 and 37,203.64 is: 51,334.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,508.28 : 90,390.54 = 37,203.64 : x
  2. Step 2: Convert to fraction form
    65,508.28/90,390.54 = 37,203.64/x
  3. Step 3: Cross multiply
    65,508.28x = 90,390.54 × 37,203.64
  4. Step 4: Simplify right side
    65,508.28x = 3,362,857,109.57
  5. Step 5: Solve for x
    x = 3,362,857,109.57/65,508.28
  6. Step 6: Final answer
    x = 51,334.84

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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.