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Finding the Fourth Proportional to 75,188.91, 112,785.34 and 21,878.73

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Solution

The fourth proportional to 75,188.91, 112,785.34 and 21,878.73 is: 32,818.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,188.91 : 112,785.34 = 21,878.73 : x
  2. Step 2: Convert to fraction form
    75,188.91/112,785.34 = 21,878.73/x
  3. Step 3: Cross multiply
    75,188.91x = 112,785.34 × 21,878.73
  4. Step 4: Simplify right side
    75,188.91x = 2,467,600,243.82
  5. Step 5: Solve for x
    x = 2,467,600,243.82/75,188.91
  6. Step 6: Final answer
    x = 32,818.67

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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.