Home / 71,815.56-107,739.32-21,899.54

Finding the Fourth Proportional to 71,815.56, 107,739.32 and 21,899.54

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Solution

The fourth proportional to 71,815.56, 107,739.32 and 21,899.54 is: 32,854.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,815.56 : 107,739.32 = 21,899.54 : x
  2. Step 2: Convert to fraction form
    71,815.56/107,739.32 = 21,899.54/x
  3. Step 3: Cross multiply
    71,815.56x = 107,739.32 × 21,899.54
  4. Step 4: Simplify right side
    71,815.56x = 2,359,441,547.91
  5. Step 5: Solve for x
    x = 2,359,441,547.91/71,815.56
  6. Step 6: Final answer
    x = 32,854.18

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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.