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Finding the Fourth Proportional to 65,087.44, 89,803.44 and 38,221.36

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Solution

The fourth proportional to 65,087.44, 89,803.44 and 38,221.36 is: 52,735.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,087.44 : 89,803.44 = 38,221.36 : x
  2. Step 2: Convert to fraction form
    65,087.44/89,803.44 = 38,221.36/x
  3. Step 3: Cross multiply
    65,087.44x = 89,803.44 × 38,221.36
  4. Step 4: Simplify right side
    65,087.44x = 3,432,409,609.48
  5. Step 5: Solve for x
    x = 3,432,409,609.48/65,087.44
  6. Step 6: Final answer
    x = 52,735.36

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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.