Home / 81,208.60-121,729.86-46,074.04

Finding the Fourth Proportional to 81,208.60, 121,729.86 and 46,074.04

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Solution

The fourth proportional to 81,208.60, 121,729.86 and 46,074.04 is: 69,063.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,208.60 : 121,729.86 = 46,074.04 : x
  2. Step 2: Convert to fraction form
    81,208.60/121,729.86 = 46,074.04/x
  3. Step 3: Cross multiply
    81,208.60x = 121,729.86 × 46,074.04
  4. Step 4: Simplify right side
    81,208.60x = 5,608,586,438.83
  5. Step 5: Solve for x
    x = 5,608,586,438.83/81,208.60
  6. Step 6: Final answer
    x = 69,063.95

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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.