Home / 86,520.40-129,756.30-27,374.20

Finding the Fourth Proportional to 86,520.40, 129,756.30 and 27,374.20

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Solution

The fourth proportional to 86,520.40, 129,756.30 and 27,374.20 is: 41,053.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,520.40 : 129,756.30 = 27,374.20 : x
  2. Step 2: Convert to fraction form
    86,520.40/129,756.30 = 27,374.20/x
  3. Step 3: Cross multiply
    86,520.40x = 129,756.30 × 27,374.20
  4. Step 4: Simplify right side
    86,520.40x = 3,551,974,907.46
  5. Step 5: Solve for x
    x = 3,551,974,907.46/86,520.40
  6. Step 6: Final answer
    x = 41,053.61

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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.