Home / 77,331.20-115,929.30-29,978.60

Finding the Fourth Proportional to 77,331.20, 115,929.30 and 29,978.60

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Solution

The fourth proportional to 77,331.20, 115,929.30 and 29,978.60 is: 44,941.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,331.20 : 115,929.30 = 29,978.60 : x
  2. Step 2: Convert to fraction form
    77,331.20/115,929.30 = 29,978.60/x
  3. Step 3: Cross multiply
    77,331.20x = 115,929.30 × 29,978.60
  4. Step 4: Simplify right side
    77,331.20x = 3,475,398,112.98
  5. Step 5: Solve for x
    x = 3,475,398,112.98/77,331.20
  6. Step 6: Final answer
    x = 44,941.73

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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.