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Finding the Fourth Proportional to 66,430.70, 99,646.05 and 44,171.90

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Solution

The fourth proportional to 66,430.70, 99,646.05 and 44,171.90 is: 66,257.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,430.70 : 99,646.05 = 44,171.90 : x
  2. Step 2: Convert to fraction form
    66,430.70/99,646.05 = 44,171.90/x
  3. Step 3: Cross multiply
    66,430.70x = 99,646.05 × 44,171.90
  4. Step 4: Simplify right side
    66,430.70x = 4,401,555,356.00
  5. Step 5: Solve for x
    x = 4,401,555,356.00/66,430.70
  6. Step 6: Final answer
    x = 66,257.85

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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.