Home / 66,142.44-99,218.75-18,756.72

Finding the Fourth Proportional to 66,142.44, 99,218.75 and 18,756.72

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Solution

The fourth proportional to 66,142.44, 99,218.75 and 18,756.72 is: 28,136.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,142.44 : 99,218.75 = 18,756.72 : x
  2. Step 2: Convert to fraction form
    66,142.44/99,218.75 = 18,756.72/x
  3. Step 3: Cross multiply
    66,142.44x = 99,218.75 × 18,756.72
  4. Step 4: Simplify right side
    66,142.44x = 1,861,018,218.72
  5. Step 5: Solve for x
    x = 1,861,018,218.72/66,142.44
  6. Step 6: Final answer
    x = 28,136.52

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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.