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Finding the Fourth Proportional to 70,297.85, 105,446.82 and 28,744.85

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Solution

The fourth proportional to 70,297.85, 105,446.82 and 28,744.85 is: 43,117.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,297.85 : 105,446.82 = 28,744.85 : x
  2. Step 2: Convert to fraction form
    70,297.85/105,446.82 = 28,744.85/x
  3. Step 3: Cross multiply
    70,297.85x = 105,446.82 × 28,744.85
  4. Step 4: Simplify right side
    70,297.85x = 3,031,053,023.88
  5. Step 5: Solve for x
    x = 3,031,053,023.88/70,297.85
  6. Step 6: Final answer
    x = 43,117.29

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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.