Home / 81,211.19-121,841.37-36,826.02

Finding the Fourth Proportional to 81,211.19, 121,841.37 and 36,826.02

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Solution

The fourth proportional to 81,211.19, 121,841.37 and 36,826.02 is: 55,250.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,211.19 : 121,841.37 = 36,826.02 : x
  2. Step 2: Convert to fraction form
    81,211.19/121,841.37 = 36,826.02/x
  3. Step 3: Cross multiply
    81,211.19x = 121,841.37 × 36,826.02
  4. Step 4: Simplify right side
    81,211.19x = 4,486,932,728.45
  5. Step 5: Solve for x
    x = 4,486,932,728.45/81,211.19
  6. Step 6: Final answer
    x = 55,250.18

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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.