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Finding the Fourth Proportional to 66,624.82, 99,887.82 and 40,323.40

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Solution

The fourth proportional to 66,624.82, 99,887.82 and 40,323.40 is: 60,455.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,624.82 : 99,887.82 = 40,323.40 : x
  2. Step 2: Convert to fraction form
    66,624.82/99,887.82 = 40,323.40/x
  3. Step 3: Cross multiply
    66,624.82x = 99,887.82 × 40,323.40
  4. Step 4: Simplify right side
    66,624.82x = 4,027,816,520.99
  5. Step 5: Solve for x
    x = 4,027,816,520.99/66,624.82
  6. Step 6: Final answer
    x = 60,455.20

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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.