Home / 84,822.04-127,828.81-76,399.12

Finding the Fourth Proportional to 84,822.04, 127,828.81 and 76,399.12

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Solution

The fourth proportional to 84,822.04, 127,828.81 and 76,399.12 is: 115,135.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,822.04 : 127,828.81 = 76,399.12 : x
  2. Step 2: Convert to fraction form
    84,822.04/127,828.81 = 76,399.12/x
  3. Step 3: Cross multiply
    84,822.04x = 127,828.81 × 76,399.12
  4. Step 4: Simplify right side
    84,822.04x = 9,766,008,594.65
  5. Step 5: Solve for x
    x = 9,766,008,594.65/84,822.04
  6. Step 6: Final answer
    x = 115,135.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.