Home / 86,862.21-130,047.54-55,193.78

Finding the Fourth Proportional to 86,862.21, 130,047.54 and 55,193.78

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Solution

The fourth proportional to 86,862.21, 130,047.54 and 55,193.78 is: 82,634.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,862.21 : 130,047.54 = 55,193.78 : x
  2. Step 2: Convert to fraction form
    86,862.21/130,047.54 = 55,193.78/x
  3. Step 3: Cross multiply
    86,862.21x = 130,047.54 × 55,193.78
  4. Step 4: Simplify right side
    86,862.21x = 7,177,814,662.06
  5. Step 5: Solve for x
    x = 7,177,814,662.06/86,862.21
  6. Step 6: Final answer
    x = 82,634.49

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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.