Home / 76,621.72-114,934.50-21,218.20

Finding the Fourth Proportional to 76,621.72, 114,934.50 and 21,218.20

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Solution

The fourth proportional to 76,621.72, 114,934.50 and 21,218.20 is: 31,827.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,621.72 : 114,934.50 = 21,218.20 : x
  2. Step 2: Convert to fraction form
    76,621.72/114,934.50 = 21,218.20/x
  3. Step 3: Cross multiply
    76,621.72x = 114,934.50 × 21,218.20
  4. Step 4: Simplify right side
    76,621.72x = 2,438,703,207.90
  5. Step 5: Solve for x
    x = 2,438,703,207.90/76,621.72
  6. Step 6: Final answer
    x = 31,827.83

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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.