Home / 85,449.66-128,189.07-26,284.02

Finding the Fourth Proportional to 85,449.66, 128,189.07 and 26,284.02

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Solution

The fourth proportional to 85,449.66, 128,189.07 and 26,284.02 is: 39,430.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,449.66 : 128,189.07 = 26,284.02 : x
  2. Step 2: Convert to fraction form
    85,449.66/128,189.07 = 26,284.02/x
  3. Step 3: Cross multiply
    85,449.66x = 128,189.07 × 26,284.02
  4. Step 4: Simplify right side
    85,449.66x = 3,369,324,079.66
  5. Step 5: Solve for x
    x = 3,369,324,079.66/85,449.66
  6. Step 6: Final answer
    x = 39,430.51

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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.