Home / 85,713.10-128,544.82-25,739.15

Finding the Fourth Proportional to 85,713.10, 128,544.82 and 25,739.15

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Solution

The fourth proportional to 85,713.10, 128,544.82 and 25,739.15 is: 38,601.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,713.10 : 128,544.82 = 25,739.15 : x
  2. Step 2: Convert to fraction form
    85,713.10/128,544.82 = 25,739.15/x
  3. Step 3: Cross multiply
    85,713.10x = 128,544.82 × 25,739.15
  4. Step 4: Simplify right side
    85,713.10x = 3,308,633,696.63
  5. Step 5: Solve for x
    x = 3,308,633,696.63/85,713.10
  6. Step 6: Final answer
    x = 38,601.26

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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.