Home / 85,744.17-128,635.05-28,816.03

Finding the Fourth Proportional to 85,744.17, 128,635.05 and 28,816.03

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Solution

The fourth proportional to 85,744.17, 128,635.05 and 28,816.03 is: 43,230.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,744.17 : 128,635.05 = 28,816.03 : x
  2. Step 2: Convert to fraction form
    85,744.17/128,635.05 = 28,816.03/x
  3. Step 3: Cross multiply
    85,744.17x = 128,635.05 × 28,816.03
  4. Step 4: Simplify right side
    85,744.17x = 3,706,751,459.85
  5. Step 5: Solve for x
    x = 3,706,751,459.85/85,744.17
  6. Step 6: Final answer
    x = 43,230.36

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1.5x scale

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.