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Finding the Fourth Proportional to 70,279.13, 105,469.73 and 27,590.71

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Solution

The fourth proportional to 70,279.13, 105,469.73 and 27,590.71 is: 41,406.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,279.13 : 105,469.73 = 27,590.71 : x
  2. Step 2: Convert to fraction form
    70,279.13/105,469.73 = 27,590.71/x
  3. Step 3: Cross multiply
    70,279.13x = 105,469.73 × 27,590.71
  4. Step 4: Simplify right side
    70,279.13x = 2,909,984,734.21
  5. Step 5: Solve for x
    x = 2,909,984,734.21/70,279.13
  6. Step 6: Final answer
    x = 41,406.10

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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.