Home / 81,739.52-112,810.96-49,901.60

Finding the Fourth Proportional to 81,739.52, 112,810.96 and 49,901.60

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Solution

The fourth proportional to 81,739.52, 112,810.96 and 49,901.60 is: 68,870.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,739.52 : 112,810.96 = 49,901.60 : x
  2. Step 2: Convert to fraction form
    81,739.52/112,810.96 = 49,901.60/x
  3. Step 3: Cross multiply
    81,739.52x = 112,810.96 × 49,901.60
  4. Step 4: Simplify right side
    81,739.52x = 5,629,447,401.54
  5. Step 5: Solve for x
    x = 5,629,447,401.54/81,739.52
  6. Step 6: Final answer
    x = 68,870.57

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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.