Home / 66,458.20-99,741.70-65,939.80

Finding the Fourth Proportional to 66,458.20, 99,741.70 and 65,939.80

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Solution

The fourth proportional to 66,458.20, 99,741.70 and 65,939.80 is: 98,963.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,458.20 : 99,741.70 = 65,939.80 : x
  2. Step 2: Convert to fraction form
    66,458.20/99,741.70 = 65,939.80/x
  3. Step 3: Cross multiply
    66,458.20x = 99,741.70 × 65,939.80
  4. Step 4: Simplify right side
    66,458.20x = 6,576,947,749.66
  5. Step 5: Solve for x
    x = 6,576,947,749.66/66,458.20
  6. Step 6: Final answer
    x = 98,963.68

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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.