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Finding the Fourth Proportional to 70,314.40, 105,417.60 and 35,279.20

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Solution

The fourth proportional to 70,314.40, 105,417.60 and 35,279.20 is: 52,891.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,314.40 : 105,417.60 = 35,279.20 : x
  2. Step 2: Convert to fraction form
    70,314.40/105,417.60 = 35,279.20/x
  3. Step 3: Cross multiply
    70,314.40x = 105,417.60 × 35,279.20
  4. Step 4: Simplify right side
    70,314.40x = 3,719,048,593.92
  5. Step 5: Solve for x
    x = 3,719,048,593.92/70,314.40
  6. Step 6: Final answer
    x = 52,891.71

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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.