Home / 85,325.68-128,003.71-29,172.03

Finding the Fourth Proportional to 85,325.68, 128,003.71 and 29,172.03

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Solution

The fourth proportional to 85,325.68, 128,003.71 and 29,172.03 is: 43,763.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,325.68 : 128,003.71 = 29,172.03 : x
  2. Step 2: Convert to fraction form
    85,325.68/128,003.71 = 29,172.03/x
  3. Step 3: Cross multiply
    85,325.68x = 128,003.71 × 29,172.03
  4. Step 4: Simplify right side
    85,325.68x = 3,734,128,068.23
  5. Step 5: Solve for x
    x = 3,734,128,068.23/85,325.68
  6. Step 6: Final answer
    x = 43,763.24

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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.