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Finding the Fourth Proportional to 55,396.80, 76,447.60 and 30,246.32

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Solution

The fourth proportional to 55,396.80, 76,447.60 and 30,246.32 is: 41,739.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,396.80 : 76,447.60 = 30,246.32 : x
  2. Step 2: Convert to fraction form
    55,396.80/76,447.60 = 30,246.32/x
  3. Step 3: Cross multiply
    55,396.80x = 76,447.60 × 30,246.32
  4. Step 4: Simplify right side
    55,396.80x = 2,312,258,572.83
  5. Step 5: Solve for x
    x = 2,312,258,572.83/55,396.80
  6. Step 6: Final answer
    x = 41,739.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.