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Finding the Fourth Proportional to 65,860.84, 98,790.85 and 21,487.62

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Solution

The fourth proportional to 65,860.84, 98,790.85 and 21,487.62 is: 32,231.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,860.84 : 98,790.85 = 21,487.62 : x
  2. Step 2: Convert to fraction form
    65,860.84/98,790.85 = 21,487.62/x
  3. Step 3: Cross multiply
    65,860.84x = 98,790.85 × 21,487.62
  4. Step 4: Simplify right side
    65,860.84x = 2,122,780,190.56
  5. Step 5: Solve for x
    x = 2,122,780,190.56/65,860.84
  6. Step 6: Final answer
    x = 32,231.30

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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.