Home / 85,334.96-128,005.18-29,172.80

Finding the Fourth Proportional to 85,334.96, 128,005.18 and 29,172.80

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Solution

The fourth proportional to 85,334.96, 128,005.18 and 29,172.80 is: 43,760.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,334.96 : 128,005.18 = 29,172.80 : x
  2. Step 2: Convert to fraction form
    85,334.96/128,005.18 = 29,172.80/x
  3. Step 3: Cross multiply
    85,334.96x = 128,005.18 × 29,172.80
  4. Step 4: Simplify right side
    85,334.96x = 3,734,269,515.10
  5. Step 5: Solve for x
    x = 3,734,269,515.10/85,334.96
  6. Step 6: Final answer
    x = 43,760.14

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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.