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Finding the Fourth Proportional to 64,460.64, 96,690.67 and 20,087.43

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Solution

The fourth proportional to 64,460.64, 96,690.67 and 20,087.43 is: 30,131.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,460.64 : 96,690.67 = 20,087.43 : x
  2. Step 2: Convert to fraction form
    64,460.64/96,690.67 = 20,087.43/x
  3. Step 3: Cross multiply
    64,460.64x = 96,690.67 × 20,087.43
  4. Step 4: Simplify right side
    64,460.64x = 1,942,267,065.28
  5. Step 5: Solve for x
    x = 1,942,267,065.28/64,460.64
  6. Step 6: Final answer
    x = 30,131.05

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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.