Home / 87,631.80-131,447.70-54,243.60

Finding the Fourth Proportional to 87,631.80, 131,447.70 and 54,243.60

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Solution

The fourth proportional to 87,631.80, 131,447.70 and 54,243.60 is: 81,365.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,631.80 : 131,447.70 = 54,243.60 : x
  2. Step 2: Convert to fraction form
    87,631.80/131,447.70 = 54,243.60/x
  3. Step 3: Cross multiply
    87,631.80x = 131,447.70 × 54,243.60
  4. Step 4: Simplify right side
    87,631.80x = 7,130,196,459.72
  5. Step 5: Solve for x
    x = 7,130,196,459.72/87,631.80
  6. Step 6: Final answer
    x = 81,365.40

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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.