Home / 51,721.72-71,380.16-30,218.40

Finding the Fourth Proportional to 51,721.72, 71,380.16 and 30,218.40

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Solution

The fourth proportional to 51,721.72, 71,380.16 and 30,218.40 is: 41,703.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,721.72 : 71,380.16 = 30,218.40 : x
  2. Step 2: Convert to fraction form
    51,721.72/71,380.16 = 30,218.40/x
  3. Step 3: Cross multiply
    51,721.72x = 71,380.16 × 30,218.40
  4. Step 4: Simplify right side
    51,721.72x = 2,156,994,226.94
  5. Step 5: Solve for x
    x = 2,156,994,226.94/51,721.72
  6. Step 6: Final answer
    x = 41,703.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.