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Finding the Fourth Proportional to 72,306.60, 99,798.72 and 44,021.40

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Solution

The fourth proportional to 72,306.60, 99,798.72 and 44,021.40 is: 60,759.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,306.60 : 99,798.72 = 44,021.40 : x
  2. Step 2: Convert to fraction form
    72,306.60/99,798.72 = 44,021.40/x
  3. Step 3: Cross multiply
    72,306.60x = 99,798.72 × 44,021.40
  4. Step 4: Simplify right side
    72,306.60x = 4,393,279,372.61
  5. Step 5: Solve for x
    x = 4,393,279,372.61/72,306.60
  6. Step 6: Final answer
    x = 60,759.04

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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.