Home / 86,285.60-129,428.31-27,126.44

Finding the Fourth Proportional to 86,285.60, 129,428.31 and 27,126.44

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Solution

The fourth proportional to 86,285.60, 129,428.31 and 27,126.44 is: 40,689.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,285.60 : 129,428.31 = 27,126.44 : x
  2. Step 2: Convert to fraction form
    86,285.60/129,428.31 = 27,126.44/x
  3. Step 3: Cross multiply
    86,285.60x = 129,428.31 × 27,126.44
  4. Step 4: Simplify right side
    86,285.60x = 3,510,929,285.52
  5. Step 5: Solve for x
    x = 3,510,929,285.52/86,285.60
  6. Step 6: Final answer
    x = 40,689.63

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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.