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Finding the Fourth Proportional to 65,853.21, 90,879 and 37,558.29

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Solution

The fourth proportional to 65,853.21, 90,879 and 37,558.29 is: 51,831.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,853.21 : 90,879 = 37,558.29 : x
  2. Step 2: Convert to fraction form
    65,853.21/90,879 = 37,558.29/x
  3. Step 3: Cross multiply
    65,853.21x = 90,879 × 37,558.29
  4. Step 4: Simplify right side
    65,853.21x = 3,413,259,836.91
  5. Step 5: Solve for x
    x = 3,413,259,836.91/65,853.21
  6. Step 6: Final answer
    x = 51,831.34

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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.