Home / 57,140.90-85,658.84-19,692.08

Finding the Fourth Proportional to 57,140.90, 85,658.84 and 19,692.08

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Solution

The fourth proportional to 57,140.90, 85,658.84 and 19,692.08 is: 29,520.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,140.90 : 85,658.84 = 19,692.08 : x
  2. Step 2: Convert to fraction form
    57,140.90/85,658.84 = 19,692.08/x
  3. Step 3: Cross multiply
    57,140.90x = 85,658.84 × 19,692.08
  4. Step 4: Simplify right side
    57,140.90x = 1,686,800,729.99
  5. Step 5: Solve for x
    x = 1,686,800,729.99/57,140.90
  6. Step 6: Final answer
    x = 29,520.02

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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.