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Finding the Fourth Proportional to 67,189.91, 92,716.43 and 39,590.20

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Solution

The fourth proportional to 67,189.91, 92,716.43 and 39,590.20 is: 54,631.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,189.91 : 92,716.43 = 39,590.20 : x
  2. Step 2: Convert to fraction form
    67,189.91/92,716.43 = 39,590.20/x
  3. Step 3: Cross multiply
    67,189.91x = 92,716.43 × 39,590.20
  4. Step 4: Simplify right side
    67,189.91x = 3,670,662,006.99
  5. Step 5: Solve for x
    x = 3,670,662,006.99/67,189.91
  6. Step 6: Final answer
    x = 54,631.15

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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.