Home / 81,182.36-112,119.54-55,755.74

Finding the Fourth Proportional to 81,182.36, 112,119.54 and 55,755.74

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Solution

The fourth proportional to 81,182.36, 112,119.54 and 55,755.74 is: 77,003.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,182.36 : 112,119.54 = 55,755.74 : x
  2. Step 2: Convert to fraction form
    81,182.36/112,119.54 = 55,755.74/x
  3. Step 3: Cross multiply
    81,182.36x = 112,119.54 × 55,755.74
  4. Step 4: Simplify right side
    81,182.36x = 6,251,307,921.16
  5. Step 5: Solve for x
    x = 6,251,307,921.16/81,182.36
  6. Step 6: Final answer
    x = 77,003.28

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1.5x scale

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.