Home / 81,365.06-112,335.99-55,863.20

Finding the Fourth Proportional to 81,365.06, 112,335.99 and 55,863.20

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Solution

The fourth proportional to 81,365.06, 112,335.99 and 55,863.20 is: 77,127.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,365.06 : 112,335.99 = 55,863.20 : x
  2. Step 2: Convert to fraction form
    81,365.06/112,335.99 = 55,863.20/x
  3. Step 3: Cross multiply
    81,365.06x = 112,335.99 × 55,863.20
  4. Step 4: Simplify right side
    81,365.06x = 6,275,447,876.57
  5. Step 5: Solve for x
    x = 6,275,447,876.57/81,365.06
  6. Step 6: Final answer
    x = 77,127.06

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.