Home / 84,862.32-127,287-28,707.12

Finding the Fourth Proportional to 84,862.32, 127,287 and 28,707.12

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Solution

The fourth proportional to 84,862.32, 127,287 and 28,707.12 is: 43,058.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,862.32 : 127,287 = 28,707.12 : x
  2. Step 2: Convert to fraction form
    84,862.32/127,287 = 28,707.12/x
  3. Step 3: Cross multiply
    84,862.32x = 127,287 × 28,707.12
  4. Step 4: Simplify right side
    84,862.32x = 3,654,043,183.44
  5. Step 5: Solve for x
    x = 3,654,043,183.44/84,862.32
  6. Step 6: Final answer
    x = 43,058.49

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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.