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Finding the Fourth Proportional to 65,216.40, 97,819.68 and 20,847.84

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Solution

The fourth proportional to 65,216.40, 97,819.68 and 20,847.84 is: 31,270.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,216.40 : 97,819.68 = 20,847.84 : x
  2. Step 2: Convert to fraction form
    65,216.40/97,819.68 = 20,847.84/x
  3. Step 3: Cross multiply
    65,216.40x = 97,819.68 × 20,847.84
  4. Step 4: Simplify right side
    65,216.40x = 2,039,329,037.49
  5. Step 5: Solve for x
    x = 2,039,329,037.49/65,216.40
  6. Step 6: Final answer
    x = 31,270.19

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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.