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Finding the Fourth Proportional to 65,889.36, 90,924.03 and 37,212.30

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Solution

The fourth proportional to 65,889.36, 90,924.03 and 37,212.30 is: 51,351.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,889.36 : 90,924.03 = 37,212.30 : x
  2. Step 2: Convert to fraction form
    65,889.36/90,924.03 = 37,212.30/x
  3. Step 3: Cross multiply
    65,889.36x = 90,924.03 × 37,212.30
  4. Step 4: Simplify right side
    65,889.36x = 3,383,492,281.57
  5. Step 5: Solve for x
    x = 3,383,492,281.57/65,889.36
  6. Step 6: Final answer
    x = 51,351.12

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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.