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Finding the Fourth Proportional to 55,258.80, 82,790.60 and 53,431.60

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Solution

The fourth proportional to 55,258.80, 82,790.60 and 53,431.60 is: 80,053.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,258.80 : 82,790.60 = 53,431.60 : x
  2. Step 2: Convert to fraction form
    55,258.80/82,790.60 = 53,431.60/x
  3. Step 3: Cross multiply
    55,258.80x = 82,790.60 × 53,431.60
  4. Step 4: Simplify right side
    55,258.80x = 4,423,634,222.96
  5. Step 5: Solve for x
    x = 4,423,634,222.96/55,258.80
  6. Step 6: Final answer
    x = 80,053.03

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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.