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Finding the Fourth Proportional to 84,672.44, 126,992.45 and 42,540.84

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Solution

The fourth proportional to 84,672.44, 126,992.45 and 42,540.84 is: 63,803.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,672.44 : 126,992.45 = 42,540.84 : x
  2. Step 2: Convert to fraction form
    84,672.44/126,992.45 = 42,540.84/x
  3. Step 3: Cross multiply
    84,672.44x = 126,992.45 × 42,540.84
  4. Step 4: Simplify right side
    84,672.44x = 5,402,365,496.66
  5. Step 5: Solve for x
    x = 5,402,365,496.66/84,672.44
  6. Step 6: Final answer
    x = 63,803.12

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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.