Home / 84,821.04-127,827.30-76,398.12

Finding the Fourth Proportional to 84,821.04, 127,827.30 and 76,398.12

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Solution

The fourth proportional to 84,821.04, 127,827.30 and 76,398.12 is: 115,133.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,821.04 : 127,827.30 = 76,398.12 : x
  2. Step 2: Convert to fraction form
    84,821.04/127,827.30 = 76,398.12/x
  3. Step 3: Cross multiply
    84,821.04x = 127,827.30 × 76,398.12
  4. Step 4: Simplify right side
    84,821.04x = 9,765,765,404.68
  5. Step 5: Solve for x
    x = 9,765,765,404.68/84,821.04
  6. Step 6: Final answer
    x = 115,133.76

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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.