Home / 66,276.53-99,399.87-18,890.66

Finding the Fourth Proportional to 66,276.53, 99,399.87 and 18,890.66

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Solution

The fourth proportional to 66,276.53, 99,399.87 and 18,890.66 is: 28,331.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,276.53 : 99,399.87 = 18,890.66 : x
  2. Step 2: Convert to fraction form
    66,276.53/99,399.87 = 18,890.66/x
  3. Step 3: Cross multiply
    66,276.53x = 99,399.87 × 18,890.66
  4. Step 4: Simplify right side
    66,276.53x = 1,877,728,651.21
  5. Step 5: Solve for x
    x = 1,877,728,651.21/66,276.53
  6. Step 6: Final answer
    x = 28,331.73

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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.