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Finding the Fourth Proportional to 83,449.64, 125,173.35 and 20,270.25

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Solution

The fourth proportional to 83,449.64, 125,173.35 and 20,270.25 is: 30,405.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,449.64 : 125,173.35 = 20,270.25 : x
  2. Step 2: Convert to fraction form
    83,449.64/125,173.35 = 20,270.25/x
  3. Step 3: Cross multiply
    83,449.64x = 125,173.35 × 20,270.25
  4. Step 4: Simplify right side
    83,449.64x = 2,537,295,097.84
  5. Step 5: Solve for x
    x = 2,537,295,097.84/83,449.64
  6. Step 6: Final answer
    x = 30,405.10

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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.