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Finding the Fourth Proportional to 65,359.27, 90,165.83 and 38,488.90

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Solution

The fourth proportional to 65,359.27, 90,165.83 and 38,488.90 is: 53,097.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,359.27 : 90,165.83 = 38,488.90 : x
  2. Step 2: Convert to fraction form
    65,359.27/90,165.83 = 38,488.90/x
  3. Step 3: Cross multiply
    65,359.27x = 90,165.83 × 38,488.90
  4. Step 4: Simplify right side
    65,359.27x = 3,470,383,436.65
  5. Step 5: Solve for x
    x = 3,470,383,436.65/65,359.27
  6. Step 6: Final answer
    x = 53,097.04

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1.5x scale

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.