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Finding the Fourth Proportional to 65,692.57, 90,549.27 and 51,327.34

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Solution

The fourth proportional to 65,692.57, 90,549.27 and 51,327.34 is: 70,748.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,692.57 : 90,549.27 = 51,327.34 : x
  2. Step 2: Convert to fraction form
    65,692.57/90,549.27 = 51,327.34/x
  3. Step 3: Cross multiply
    65,692.57x = 90,549.27 × 51,327.34
  4. Step 4: Simplify right side
    65,692.57x = 4,647,653,168.04
  5. Step 5: Solve for x
    x = 4,647,653,168.04/65,692.57
  6. Step 6: Final answer
    x = 70,748.54

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1.5x scale

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.