Home / 51,687.64-71,356.04-34,780.78

Finding the Fourth Proportional to 51,687.64, 71,356.04 and 34,780.78

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Solution

The fourth proportional to 51,687.64, 71,356.04 and 34,780.78 is: 48,015.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,687.64 : 71,356.04 = 34,780.78 : x
  2. Step 2: Convert to fraction form
    51,687.64/71,356.04 = 34,780.78/x
  3. Step 3: Cross multiply
    51,687.64x = 71,356.04 × 34,780.78
  4. Step 4: Simplify right side
    51,687.64x = 2,481,818,728.91
  5. Step 5: Solve for x
    x = 2,481,818,728.91/51,687.64
  6. Step 6: Final answer
    x = 48,015.71

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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.