Home / 87,939.32-121,356.38-47,653.08

Finding the Fourth Proportional to 87,939.32, 121,356.38 and 47,653.08

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Solution

The fourth proportional to 87,939.32, 121,356.38 and 47,653.08 is: 65,761.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,939.32 : 121,356.38 = 47,653.08 : x
  2. Step 2: Convert to fraction form
    87,939.32/121,356.38 = 47,653.08/x
  3. Step 3: Cross multiply
    87,939.32x = 121,356.38 × 47,653.08
  4. Step 4: Simplify right side
    87,939.32x = 5,783,005,046.39
  5. Step 5: Solve for x
    x = 5,783,005,046.39/87,939.32
  6. Step 6: Final answer
    x = 65,761.32

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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.