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Finding the Fourth Proportional to 72,711.60, 100,359.82 and 44,440.98

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Solution

The fourth proportional to 72,711.60, 100,359.82 and 44,440.98 is: 61,339.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,711.60 : 100,359.82 = 44,440.98 : x
  2. Step 2: Convert to fraction form
    72,711.60/100,359.82 = 44,440.98/x
  3. Step 3: Cross multiply
    72,711.60x = 100,359.82 × 44,440.98
  4. Step 4: Simplify right side
    72,711.60x = 4,460,088,753.42
  5. Step 5: Solve for x
    x = 4,460,088,753.42/72,711.60
  6. Step 6: Final answer
    x = 61,339.44

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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.