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Finding the Fourth Proportional to 71,581.91, 107,364.65 and 18,995.49

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Solution

The fourth proportional to 71,581.91, 107,364.65 and 18,995.49 is: 28,491.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,581.91 : 107,364.65 = 18,995.49 : x
  2. Step 2: Convert to fraction form
    71,581.91/107,364.65 = 18,995.49/x
  3. Step 3: Cross multiply
    71,581.91x = 107,364.65 × 18,995.49
  4. Step 4: Simplify right side
    71,581.91x = 2,039,444,040.45
  5. Step 5: Solve for x
    x = 2,039,444,040.45/71,581.91
  6. Step 6: Final answer
    x = 28,491.06

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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.