Home / 81,656.28-122,370.24-44,135.40

Finding the Fourth Proportional to 81,656.28, 122,370.24 and 44,135.40

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Solution

The fourth proportional to 81,656.28, 122,370.24 and 44,135.40 is: 66,141.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,656.28 : 122,370.24 = 44,135.40 : x
  2. Step 2: Convert to fraction form
    81,656.28/122,370.24 = 44,135.40/x
  3. Step 3: Cross multiply
    81,656.28x = 122,370.24 × 44,135.40
  4. Step 4: Simplify right side
    81,656.28x = 5,400,859,490.50
  5. Step 5: Solve for x
    x = 5,400,859,490.50/81,656.28
  6. Step 6: Final answer
    x = 66,141.39

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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.