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Finding the Fourth Proportional to 67,590.20, 101,442.90 and 30,207.80

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Solution

The fourth proportional to 67,590.20, 101,442.90 and 30,207.80 is: 45,337.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,590.20 : 101,442.90 = 30,207.80 : x
  2. Step 2: Convert to fraction form
    67,590.20/101,442.90 = 30,207.80/x
  3. Step 3: Cross multiply
    67,590.20x = 101,442.90 × 30,207.80
  4. Step 4: Simplify right side
    67,590.20x = 3,064,366,834.62
  5. Step 5: Solve for x
    x = 3,064,366,834.62/67,590.20
  6. Step 6: Final answer
    x = 45,337.44

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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.