Home / 80,904.60-121,374.41-30,984.71

Finding the Fourth Proportional to 80,904.60, 121,374.41 and 30,984.71

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Solution

The fourth proportional to 80,904.60, 121,374.41 and 30,984.71 is: 46,483.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,904.60 : 121,374.41 = 30,984.71 : x
  2. Step 2: Convert to fraction form
    80,904.60/121,374.41 = 30,984.71/x
  3. Step 3: Cross multiply
    80,904.60x = 121,374.41 × 30,984.71
  4. Step 4: Simplify right side
    80,904.60x = 3,760,750,133.48
  5. Step 5: Solve for x
    x = 3,760,750,133.48/80,904.60
  6. Step 6: Final answer
    x = 46,483.76

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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.