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Finding the Fourth Proportional to 64,690.34, 89,272.50 and 36,396.02

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Solution

The fourth proportional to 64,690.34, 89,272.50 and 36,396.02 is: 50,226.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,690.34 : 89,272.50 = 36,396.02 : x
  2. Step 2: Convert to fraction form
    64,690.34/89,272.50 = 36,396.02/x
  3. Step 3: Cross multiply
    64,690.34x = 89,272.50 × 36,396.02
  4. Step 4: Simplify right side
    64,690.34x = 3,249,163,249.09
  5. Step 5: Solve for x
    x = 3,249,163,249.09/64,690.34
  6. Step 6: Final answer
    x = 50,226.41

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.