Home / 80,926.56-121,388.40-31,678.56

Finding the Fourth Proportional to 80,926.56, 121,388.40 and 31,678.56

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Solution

The fourth proportional to 80,926.56, 121,388.40 and 31,678.56 is: 47,517.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,926.56 : 121,388.40 = 31,678.56 : x
  2. Step 2: Convert to fraction form
    80,926.56/121,388.40 = 31,678.56/x
  3. Step 3: Cross multiply
    80,926.56x = 121,388.40 × 31,678.56
  4. Step 4: Simplify right side
    80,926.56x = 3,845,409,712.70
  5. Step 5: Solve for x
    x = 3,845,409,712.70/80,926.56
  6. Step 6: Final answer
    x = 47,517.28

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1.5x scale

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.