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Finding the Fourth Proportional to 50,692.80, 75,964.16 and 45,156.80

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Solution

The fourth proportional to 50,692.80, 75,964.16 and 45,156.80 is: 67,668.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,692.80 : 75,964.16 = 45,156.80 : x
  2. Step 2: Convert to fraction form
    50,692.80/75,964.16 = 45,156.80/x
  3. Step 3: Cross multiply
    50,692.80x = 75,964.16 × 45,156.80
  4. Step 4: Simplify right side
    50,692.80x = 3,430,298,380.29
  5. Step 5: Solve for x
    x = 3,430,298,380.29/50,692.80
  6. Step 6: Final answer
    x = 67,668.35

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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.