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Finding the Fourth Proportional to 70,502.30, 105,794.73 and 28,375.82

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Solution

The fourth proportional to 70,502.30, 105,794.73 and 28,375.82 is: 42,580.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,502.30 : 105,794.73 = 28,375.82 : x
  2. Step 2: Convert to fraction form
    70,502.30/105,794.73 = 28,375.82/x
  3. Step 3: Cross multiply
    70,502.30x = 105,794.73 × 28,375.82
  4. Step 4: Simplify right side
    70,502.30x = 3,002,012,215.43
  5. Step 5: Solve for x
    x = 3,002,012,215.43/70,502.30
  6. Step 6: Final answer
    x = 42,580.34

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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.