Home / 80,731.35-121,097.09-38,601.52

Finding the Fourth Proportional to 80,731.35, 121,097.09 and 38,601.52

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Solution

The fourth proportional to 80,731.35, 121,097.09 and 38,601.52 is: 57,902.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,731.35 : 121,097.09 = 38,601.52 : x
  2. Step 2: Convert to fraction form
    80,731.35/121,097.09 = 38,601.52/x
  3. Step 3: Cross multiply
    80,731.35x = 121,097.09 × 38,601.52
  4. Step 4: Simplify right side
    80,731.35x = 4,674,531,741.58
  5. Step 5: Solve for x
    x = 4,674,531,741.58/80,731.35
  6. Step 6: Final answer
    x = 57,902.31

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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.