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Finding the Fourth Proportional to 57,752.70, 86,636.96 and 20,304.20

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Solution

The fourth proportional to 57,752.70, 86,636.96 and 20,304.20 is: 30,459.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,752.70 : 86,636.96 = 20,304.20 : x
  2. Step 2: Convert to fraction form
    57,752.70/86,636.96 = 20,304.20/x
  3. Step 3: Cross multiply
    57,752.70x = 86,636.96 × 20,304.20
  4. Step 4: Simplify right side
    57,752.70x = 1,759,094,354.44
  5. Step 5: Solve for x
    x = 1,759,094,354.44/57,752.70
  6. Step 6: Final answer
    x = 30,459.09

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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.