Home / 81,113.80-121,584.66-47,849.56

Finding the Fourth Proportional to 81,113.80, 121,584.66 and 47,849.56

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Solution

The fourth proportional to 81,113.80, 121,584.66 and 47,849.56 is: 71,723.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,113.80 : 121,584.66 = 47,849.56 : x
  2. Step 2: Convert to fraction form
    81,113.80/121,584.66 = 47,849.56/x
  3. Step 3: Cross multiply
    81,113.80x = 121,584.66 × 47,849.56
  4. Step 4: Simplify right side
    81,113.80x = 5,817,772,483.75
  5. Step 5: Solve for x
    x = 5,817,772,483.75/81,113.80
  6. Step 6: Final answer
    x = 71,723.58

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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.