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Finding the Fourth Proportional to 65,339.28, 90,165.52 and 37,044.40

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Solution

The fourth proportional to 65,339.28, 90,165.52 and 37,044.40 is: 51,119.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,339.28 : 90,165.52 = 37,044.40 : x
  2. Step 2: Convert to fraction form
    65,339.28/90,165.52 = 37,044.40/x
  3. Step 3: Cross multiply
    65,339.28x = 90,165.52 × 37,044.40
  4. Step 4: Simplify right side
    65,339.28x = 3,340,127,589.09
  5. Step 5: Solve for x
    x = 3,340,127,589.09/65,339.28
  6. Step 6: Final answer
    x = 51,119.75

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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.