Home / 86,411.10-129,628.80-27,240.60

Finding the Fourth Proportional to 86,411.10, 129,628.80 and 27,240.60

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Solution

The fourth proportional to 86,411.10, 129,628.80 and 27,240.60 is: 40,864.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,411.10 : 129,628.80 = 27,240.60 : x
  2. Step 2: Convert to fraction form
    86,411.10/129,628.80 = 27,240.60/x
  3. Step 3: Cross multiply
    86,411.10x = 129,628.80 × 27,240.60
  4. Step 4: Simplify right side
    86,411.10x = 3,531,166,289.28
  5. Step 5: Solve for x
    x = 3,531,166,289.28/86,411.10
  6. Step 6: Final answer
    x = 40,864.73

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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.