Home / 51,382.08-70,905.78-28,721.12

Finding the Fourth Proportional to 51,382.08, 70,905.78 and 28,721.12

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Solution

The fourth proportional to 51,382.08, 70,905.78 and 28,721.12 is: 39,634.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,382.08 : 70,905.78 = 28,721.12 : x
  2. Step 2: Convert to fraction form
    51,382.08/70,905.78 = 28,721.12/x
  3. Step 3: Cross multiply
    51,382.08x = 70,905.78 × 28,721.12
  4. Step 4: Simplify right side
    51,382.08x = 2,036,493,061.54
  5. Step 5: Solve for x
    x = 2,036,493,061.54/51,382.08
  6. Step 6: Final answer
    x = 39,634.31

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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.