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Finding the Fourth Proportional to 65,274.09, 90,080 and 36,979.57

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Solution

The fourth proportional to 65,274.09, 90,080 and 36,979.57 is: 51,032.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,274.09 : 90,080 = 36,979.57 : x
  2. Step 2: Convert to fraction form
    65,274.09/90,080 = 36,979.57/x
  3. Step 3: Cross multiply
    65,274.09x = 90,080 × 36,979.57
  4. Step 4: Simplify right side
    65,274.09x = 3,331,119,665.60
  5. Step 5: Solve for x
    x = 3,331,119,665.60/65,274.09
  6. Step 6: Final answer
    x = 51,032.80

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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.