Home / 51,435.16-70,979.74-28,774.68

Finding the Fourth Proportional to 51,435.16, 70,979.74 and 28,774.68

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Solution

The fourth proportional to 51,435.16, 70,979.74 and 28,774.68 is: 39,708.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,435.16 : 70,979.74 = 28,774.68 : x
  2. Step 2: Convert to fraction form
    51,435.16/70,979.74 = 28,774.68/x
  3. Step 3: Cross multiply
    51,435.16x = 70,979.74 × 28,774.68
  4. Step 4: Simplify right side
    51,435.16x = 2,042,419,304.98
  5. Step 5: Solve for x
    x = 2,042,419,304.98/51,435.16
  6. Step 6: Final answer
    x = 39,708.62

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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.