Home / 86,429.56-129,644.34-27,271.18

Finding the Fourth Proportional to 86,429.56, 129,644.34 and 27,271.18

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Solution

The fourth proportional to 86,429.56, 129,644.34 and 27,271.18 is: 40,906.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,429.56 : 129,644.34 = 27,271.18 : x
  2. Step 2: Convert to fraction form
    86,429.56/129,644.34 = 27,271.18/x
  3. Step 3: Cross multiply
    86,429.56x = 129,644.34 × 27,271.18
  4. Step 4: Simplify right side
    86,429.56x = 3,535,554,132.12
  5. Step 5: Solve for x
    x = 3,535,554,132.12/86,429.56
  6. Step 6: Final answer
    x = 40,906.77

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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.