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Finding the Fourth Proportional to 70,018.20, 105,033.84 and 27,888.12

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Solution

The fourth proportional to 70,018.20, 105,033.84 and 27,888.12 is: 41,834.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,018.20 : 105,033.84 = 27,888.12 : x
  2. Step 2: Convert to fraction form
    70,018.20/105,033.84 = 27,888.12/x
  3. Step 3: Cross multiply
    70,018.20x = 105,033.84 × 27,888.12
  4. Step 4: Simplify right side
    70,018.20x = 2,929,196,333.98
  5. Step 5: Solve for x
    x = 2,929,196,333.98/70,018.20
  6. Step 6: Final answer
    x = 41,834.78

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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.