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Finding the Fourth Proportional to 88,502.56, 122,039.76 and 56,672.80

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Solution

The fourth proportional to 88,502.56, 122,039.76 and 56,672.80 is: 78,148.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,502.56 : 122,039.76 = 56,672.80 : x
  2. Step 2: Convert to fraction form
    88,502.56/122,039.76 = 56,672.80/x
  3. Step 3: Cross multiply
    88,502.56x = 122,039.76 × 56,672.80
  4. Step 4: Simplify right side
    88,502.56x = 6,916,334,910.53
  5. Step 5: Solve for x
    x = 6,916,334,910.53/88,502.56
  6. Step 6: Final answer
    x = 78,148.42

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.