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Finding the Fourth Proportional to 86,280.84, 129,415.02 and 27,133.43

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Solution

The fourth proportional to 86,280.84, 129,415.02 and 27,133.43 is: 40,698.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,280.84 : 129,415.02 = 27,133.43 : x
  2. Step 2: Convert to fraction form
    86,280.84/129,415.02 = 27,133.43/x
  3. Step 3: Cross multiply
    86,280.84x = 129,415.02 × 27,133.43
  4. Step 4: Simplify right side
    86,280.84x = 3,511,472,739.04
  5. Step 5: Solve for x
    x = 3,511,472,739.04/86,280.84
  6. Step 6: Final answer
    x = 40,698.18

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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.