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Finding the Fourth Proportional to 65,449.46, 98,174.20 and 21,080.70

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Solution

The fourth proportional to 65,449.46, 98,174.20 and 21,080.70 is: 31,621.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,449.46 : 98,174.20 = 21,080.70 : x
  2. Step 2: Convert to fraction form
    65,449.46/98,174.20 = 21,080.70/x
  3. Step 3: Cross multiply
    65,449.46x = 98,174.20 × 21,080.70
  4. Step 4: Simplify right side
    65,449.46x = 2,069,580,857.94
  5. Step 5: Solve for x
    x = 2,069,580,857.94/65,449.46
  6. Step 6: Final answer
    x = 31,621.05

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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.