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Finding the Fourth Proportional to 88,123.20, 131,914.80 and 48,559.20

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Solution

The fourth proportional to 88,123.20, 131,914.80 and 48,559.20 is: 72,690.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,123.20 : 131,914.80 = 48,559.20 : x
  2. Step 2: Convert to fraction form
    88,123.20/131,914.80 = 48,559.20/x
  3. Step 3: Cross multiply
    88,123.20x = 131,914.80 × 48,559.20
  4. Step 4: Simplify right side
    88,123.20x = 6,405,677,156.16
  5. Step 5: Solve for x
    x = 6,405,677,156.16/88,123.20
  6. Step 6: Final answer
    x = 72,690.02

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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.