Home / 81,629.60-122,444.40-26,231.20

Finding the Fourth Proportional to 81,629.60, 122,444.40 and 26,231.20

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Solution

The fourth proportional to 81,629.60, 122,444.40 and 26,231.20 is: 39,346.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,629.60 : 122,444.40 = 26,231.20 : x
  2. Step 2: Convert to fraction form
    81,629.60/122,444.40 = 26,231.20/x
  3. Step 3: Cross multiply
    81,629.60x = 122,444.40 × 26,231.20
  4. Step 4: Simplify right side
    81,629.60x = 3,211,863,545.28
  5. Step 5: Solve for x
    x = 3,211,863,545.28/81,629.60
  6. Step 6: Final answer
    x = 39,346.80

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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.