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Finding the Fourth Proportional to 43,999.70, 65,999.55 and 40,889.30

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Solution

The fourth proportional to 43,999.70, 65,999.55 and 40,889.30 is: 61,333.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,999.70 : 65,999.55 = 40,889.30 : x
  2. Step 2: Convert to fraction form
    43,999.70/65,999.55 = 40,889.30/x
  3. Step 3: Cross multiply
    43,999.70x = 65,999.55 × 40,889.30
  4. Step 4: Simplify right side
    43,999.70x = 2,698,675,399.82
  5. Step 5: Solve for x
    x = 2,698,675,399.82/43,999.70
  6. Step 6: Final answer
    x = 61,333.95

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1.5x scale

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.