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Finding the Fourth Proportional to 64,692.96, 89,276.12 and 36,398.68

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Solution

The fourth proportional to 64,692.96, 89,276.12 and 36,398.68 is: 50,230.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,692.96 : 89,276.12 = 36,398.68 : x
  2. Step 2: Convert to fraction form
    64,692.96/89,276.12 = 36,398.68/x
  3. Step 3: Cross multiply
    64,692.96x = 89,276.12 × 36,398.68
  4. Step 4: Simplify right side
    64,692.96x = 3,249,532,923.52
  5. Step 5: Solve for x
    x = 3,249,532,923.52/64,692.96
  6. Step 6: Final answer
    x = 50,230.09

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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.