Home / 84,724.92-127,170-40,382.28

Finding the Fourth Proportional to 84,724.92, 127,170 and 40,382.28

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Solution

The fourth proportional to 84,724.92, 127,170 and 40,382.28 is: 60,612.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,724.92 : 127,170 = 40,382.28 : x
  2. Step 2: Convert to fraction form
    84,724.92/127,170 = 40,382.28/x
  3. Step 3: Cross multiply
    84,724.92x = 127,170 × 40,382.28
  4. Step 4: Simplify right side
    84,724.92x = 5,135,414,547.60
  5. Step 5: Solve for x
    x = 5,135,414,547.60/84,724.92
  6. Step 6: Final answer
    x = 60,612.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.