Home / 68,219.91-102,327.55-20,833.08

Finding the Fourth Proportional to 68,219.91, 102,327.55 and 20,833.08

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Solution

The fourth proportional to 68,219.91, 102,327.55 and 20,833.08 is: 31,248.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,219.91 : 102,327.55 = 20,833.08 : x
  2. Step 2: Convert to fraction form
    68,219.91/102,327.55 = 20,833.08/x
  3. Step 3: Cross multiply
    68,219.91x = 102,327.55 × 20,833.08
  4. Step 4: Simplify right side
    68,219.91x = 2,131,797,931.19
  5. Step 5: Solve for x
    x = 2,131,797,931.19/68,219.91
  6. Step 6: Final answer
    x = 31,248.91

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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.