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Finding the Fourth Proportional to 64,872.50, 97,308.17 and 20,499.26

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Solution

The fourth proportional to 64,872.50, 97,308.17 and 20,499.26 is: 30,748.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,872.50 : 97,308.17 = 20,499.26 : x
  2. Step 2: Convert to fraction form
    64,872.50/97,308.17 = 20,499.26/x
  3. Step 3: Cross multiply
    64,872.50x = 97,308.17 × 20,499.26
  4. Step 4: Simplify right side
    64,872.50x = 1,994,745,512.15
  5. Step 5: Solve for x
    x = 1,994,745,512.15/64,872.50
  6. Step 6: Final answer
    x = 30,748.71

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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.