Home / 82,421.20-123,590.40-40,304.56

Finding the Fourth Proportional to 82,421.20, 123,590.40 and 40,304.56

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Solution

The fourth proportional to 82,421.20, 123,590.40 and 40,304.56 is: 60,436.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,421.20 : 123,590.40 = 40,304.56 : x
  2. Step 2: Convert to fraction form
    82,421.20/123,590.40 = 40,304.56/x
  3. Step 3: Cross multiply
    82,421.20x = 123,590.40 × 40,304.56
  4. Step 4: Simplify right side
    82,421.20x = 4,981,256,692.22
  5. Step 5: Solve for x
    x = 4,981,256,692.22/82,421.20
  6. Step 6: Final answer
    x = 60,436.60

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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.