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Finding the Fourth Proportional to 64,459.64, 96,689.17 and 20,086.43

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Solution

The fourth proportional to 64,459.64, 96,689.17 and 20,086.43 is: 30,129.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,459.64 : 96,689.17 = 20,086.43 : x
  2. Step 2: Convert to fraction form
    64,459.64/96,689.17 = 20,086.43/x
  3. Step 3: Cross multiply
    64,459.64x = 96,689.17 × 20,086.43
  4. Step 4: Simplify right side
    64,459.64x = 1,942,139,711.30
  5. Step 5: Solve for x
    x = 1,942,139,711.30/64,459.64
  6. Step 6: Final answer
    x = 30,129.55

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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.