Home / 91,065.40-136,452.30-57,725.80

Finding the Fourth Proportional to 91,065.40, 136,452.30 and 57,725.80

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Solution

The fourth proportional to 91,065.40, 136,452.30 and 57,725.80 is: 86,496.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,065.40 : 136,452.30 = 57,725.80 : x
  2. Step 2: Convert to fraction form
    91,065.40/136,452.30 = 57,725.80/x
  3. Step 3: Cross multiply
    91,065.40x = 136,452.30 × 57,725.80
  4. Step 4: Simplify right side
    91,065.40x = 7,876,818,179.34
  5. Step 5: Solve for x
    x = 7,876,818,179.34/91,065.40
  6. Step 6: Final answer
    x = 86,496.28

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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.