Home / 47,169.84-65,121.24-31,275.78

Finding the Fourth Proportional to 47,169.84, 65,121.24 and 31,275.78

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Solution

The fourth proportional to 47,169.84, 65,121.24 and 31,275.78 is: 43,178.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,169.84 : 65,121.24 = 31,275.78 : x
  2. Step 2: Convert to fraction form
    47,169.84/65,121.24 = 31,275.78/x
  3. Step 3: Cross multiply
    47,169.84x = 65,121.24 × 31,275.78
  4. Step 4: Simplify right side
    47,169.84x = 2,036,717,575.57
  5. Step 5: Solve for x
    x = 2,036,717,575.57/47,169.84
  6. Step 6: Final answer
    x = 43,178.39

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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.