Home / 84,690-127,084.22-37,942.88

Finding the Fourth Proportional to 84,690, 127,084.22 and 37,942.88

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Solution

The fourth proportional to 84,690, 127,084.22 and 37,942.88 is: 56,936.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,690 : 127,084.22 = 37,942.88 : x
  2. Step 2: Convert to fraction form
    84,690/127,084.22 = 37,942.88/x
  3. Step 3: Cross multiply
    84,690x = 127,084.22 × 37,942.88
  4. Step 4: Simplify right side
    84,690x = 4,821,940,484.22
  5. Step 5: Solve for x
    x = 4,821,940,484.22/84,690
  6. Step 6: Final answer
    x = 56,936.36

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1.5x scale

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.