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Finding the Fourth Proportional to 65,765.46, 98,638.92 and 21,392.94

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Solution

The fourth proportional to 65,765.46, 98,638.92 and 21,392.94 is: 32,086.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,765.46 : 98,638.92 = 21,392.94 : x
  2. Step 2: Convert to fraction form
    65,765.46/98,638.92 = 21,392.94/x
  3. Step 3: Cross multiply
    65,765.46x = 98,638.92 × 21,392.94
  4. Step 4: Simplify right side
    65,765.46x = 2,110,176,497.22
  5. Step 5: Solve for x
    x = 2,110,176,497.22/65,765.46
  6. Step 6: Final answer
    x = 32,086.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.